It seems as if the world of photography is currently turning all around this topic: Is the time of DSLR over? On the web, people get into heated discussions about this issue. Should you join in?
A Hot Topic
A few weeks ago, I published an article about different stages of growing photographers. It might not have been my best one, but the reason why it has been criticized really struck me. I wrote a little innocent sentence in the description of (stereo)typical photography beginners:
You bought an entry-level DSLR, because you don’t know what mirrorless is, yet.
Instead of comments about the content of the article, this almost meaningless sentence was the most discussed issue. It might be dependent on culture, but in the two countries in which I stayed the most during the last years (India and Germany), the term “mirrorless” is yet known by a small group of experts. DSLR is what laymen tend to call any camera which is not a smartphone or action cam.
Articles which discuss the advantages and disadvantages of the two systems are everywhere on the world wide web. In Facebook groups of photographers, you will usually find a meme of a popcorn-eating people in the comments, whenever someone posted something in favor or against any system. You can be sure that you’ll soon witness a dirty battle, insults, and furious dialogues. Some people just lean back and enjoy the show, while others join the battle. It may happen in the form of positive criticism, but too often it will end in destructive online behavior, which would make the authors' moms very sad and disappointed.

In this situation, the sensor stabilization of my mirrorless camera allowed me to shoot a 1/4 sec. exposure without a tripod. My DSLR would not forgive me those little shakes that happen when you stand on slippery stones.
Where’s the Threat?
I shoot with both systems on different occasions. At the last wedding I shot, I thought: “Well, sometimes I wish the shutter of my DSLR was more silent.” On a recent road-trip with friends, I was surprised how quickly the battery of my mirrorless died, compared to my DSLR. That’s it. I would not consider either of them better or worse. There are just few occasions where I feel the difference. Mostly, it’s just the sensor and body size.
You might think differently. Maybe you’ve got really good reasons to choose one over the other. That’s fine and I guess one of the most money-saving skills of a photographer is to know exactly which gear you need. Why fight over it with others? Is there a real threat? Of course, you won’t get new lenses, if the end of DSLR was near, whoever does believe that. But aren’t there enough already? If you love your system and people invest into new ones, you might be lucky getting a bargain on their second-hand gear.
Switching Will Always Be Possible
There is no problem in switching from one system to the other, yet. It’s literally just a mirror. Use your DSLR in live-view and you almost got a mirrorless (don’t get angry, it’s just a joke). Real differences in cameras are their designs, features, and performance. It’s not about mirrorless versus DSLR in general. Every model has its specific advantages and disadvantages. If you gifted a Nikon D850 to an Olympus OM-D E-M1 user, I guess the reply wouldn’t be: “No, sorry. Mirrorless is better.” Maybe it would rather be: “Sorry, I travel a lot, so this camera is too heavy for me. I’ll sell it and buy a plane ticket.”, or "Hell, that's an amazing camera."
Adjustment is another factor, why some people prefer one system over the other. That’s an old debate, too. Give born Nikon-users a Canon DSLR and they will need some time to adjust. It’s not impossible, though. If you switch from a Nikon DSLR to a Nikon mirrorless, there will be no big issue. There might be a surprised yell when the digital viewfinder turns on (“heck, what’s that?”). At least that's what happened to me, when I encountered a mirrorless for the first time. Some might like the new experience, others won’t.
Of course, it’s nice to share your experience and opinion, but is it worth getting angry? Remember your first lesson in photography? The photographer makes the image.

If I planned to shoot at night, I'd never even think about my Micro Four-Thirds mirrorless camera.
Photograph and Let Photograph
I don’t want to call people out and of course, it’s an interesting debate which system suits to whom and if there is a future for DSLR users. Yet, I wonder if it is worth all the fight? Shouldn’t we all respect each other and simply choose the gear which we prefer? After all, photography is more than just pressing the buttons of a specific body with a specific lens adapted to it.
As everywhere on the web, we tend to forget that we deal with human beings on the other side of the wire. Even if we have a debate about the issue and make a considerable point, do we need to become arrogant? Why do so many of us see those discussions as a platform to make one’s mark? Listening could help us learn something from others. We could see that mirrorless fulfills our desires. Or maybe the experience of others could also prevent us from making investments we don’t need to make. We can’t know if our situation and our taste fits to others. That’s why we can make suggestions but shouldn’t devaluate other photographer’s opinions.

We all know the saying "The best camera is the one that's with you." In this case, I wish it was my full frame DSLR, because of its wider dynamic range. Yet, it was to heavy to carry it all day and this shot wasn't planned but just happened.
Don’t Get Sucked Into the Fight
Luckily, on Fstoppers, most comments and members are quite moderate, but watch out for some photography groups on Facebook or other platforms. Cyber bullying can escalate quickly, and people can become quite personal. It’s hard, but simply don’t react to them. Be aware that there are trolls and other frustrated people out there who simply aim at bringing you down. Aggression is a downwards spiral with no winners.
If someone makes a suggestion, keep in mind that their position might be different from yours. Check their portfolio and evaluate if you are on the same level. Do you trust his or her opinion? If so, you can ask for details. If not, you can still say "thank you". You won’t win a price for having the last word about a camera system. It’s not about being right, it’s about learning something. And we should enjoy this together, no matter which system or brand we use.
Last December was when I decided I was ready for a new camera since my aging 5D wasn't getting any fewer hot pixels and I headed to the camera store. I looked at the EOS R and RP but I just didn't enjoy the feel of them. Walked out with a 6D Mark II and I've been perfectly content.
I can only speak for me. Just go out, grab a camera, and make some images and enjoy what you do.
Exactly....why be furious? Just shoot whatever the hell you want to. No problems, no worries.