Hey, first of all, I think this thread is a good idea.
I went through a lot of these doubts myself recently. I don't really make any money as an artist (yet??????) but I got hired to do a commission not too long ago. It wasn't the most exciting project but it was so nice to think that somebody wanted my work, ya know? And then from there, everything that could go wrong, did. Or so it seemed. The person who commissioned me wouldn't talk to me, despite me being readily available for them to talk to in person, and having given them my email and phone number. When they finally did talk to me, they demanded a huge list of last minute changes, basically an entire paintings worth. Every step of this process was so frustrating, and now I'm left with a painting I don't want and never having been paid for my efforts. Ugh.
I've been trying to keep at it anyway. I love art, can't stop making. But sometimes it's easy to get discouraged when you are trying to build a following and it seems like it never really grows. But I know that's just how it goes....
Anyway, thanks for making a space to rant. 