[quote=Halvtand]Doujutsus are cool, I think we can all agree on this. The problem is that because they are cool people want to play around with them. Specifically, a lot of people want to play with a doujutsu.[/quote]

Funny thing, the only serious Uchiha concept I ever wrote up was a kid who was blind from the power of his dojutsu.

True story.

A shame I never actually got to use him.