it sucks even worse that people have to let those feelings stop them or discourage them
I think that really is the worst part. Art isn't lucrative, it doesn't fill up the fridge or earns you tons and tons of money (except with a very few exceptions), so a creative ability is usually not supported the way it would have to be for the person in question to develop sufficient trust in their ability to actually develop it to its full potential.

In fandom, you get to see what the real world is actually missing out on, and sometimes, it's almost scary.