It is a complicated question.
To answer your question,first depend on what you think about photography.
I love film photography, I gave it priority to other forms of photography since it has a unique way of production more than ever, which fits my little narcissism aesthetics. :P
Answer1: I only invest on film camera, a mju2, a Nikon, and a half-frame. among them, my favorite..is Mju2, a auto foolproof, actually I love it! convience, and I can take it everywhere, and the performance is amazing!
Answer 2+3: I also use DSLR, borrowed from friends, Danwei during works... I should say, if photography is your job, u need to use DSLR anyway to ensure the quality. But sometimes travelling with such a heavy thing it is kinda Zhuangbility.
I never really learn how to shot, just talk to friend and go to practics. When I take photoes, I emphasize on constrcution of images, but I am not good at using light and dark, so i all the time think I need to go to learn more professionally. And, Once I interview
a Lu Nan, a magnum photographer, he said, it takes no more then 10 min to learn his technic. But as u may know, he started to learn photography since 10 years old.
Answer 1+3 :One of my favorite photographer is Mariyama Daido, whoes collection Farewell Photography is touching...but he uses foolproof only. Of course not everybody can acheive that with lo-fi equipment, as a typical saying, the brain and eyes behind the
camera merits, not the camera itself.