I'm the opposite way. But for me, I'm an all right writer and a shitty artist, so I don't even TRY when I do art anymore because I know it'll be awful. :/

That said, writing and art are both easily criticized, but sometimes writing is more personal because a lot of writers (myself included) put a little bit of ourselves into our writing. In actual written words. That people can see. Even with fanfiction. So sometimes, having it be a little more...mmm...obvious maybe? Makes it a scary thing to let other people see. Like it might be more personal to you even though it's still fan-made shit.