Ahhh, now we get to a real question.
It would have been easier had you actually read what people have posted in answer to that on this very thread. Or just not ignored it. Or you could read the numberous times Q explains it with his posts. I could look it up for you and post it here but by God its about nap time and I'm feeling lazy.
So I'll just give you the simple answer for now: Because they are autists. And secure anonymity.

You say artists like it was a good thing.
They are defectives, retards and drooling booger eaters.