Quick here...
ESPN has not, at this point, wanted paintball in thier X-Games. I refrence to
http://www.tyger.us/pubimages/ESPN.JPG which was printed in thier "ESPN the Magazine" a while ago. 2002, I think.
The olympics have removed a few events for PC reasons. In the80's the removed a shooting event in which participants shot at a paper target in the shape of a wild boar. So I think that a paintball event, where you shoot a 'gun' at 'people', might be frownd upon by a conservative olympic committee.
Nevermind the drugs, the lack of an internaitonal ruling body, and standard rules...
Oh yeah, I think roller skating is an olympic sport too, but they have an internationial ruling body nobody cares for. (If I recall correctly)
I wouldn't mind seeing paintball in the olympics, we just need to tweak the hell out of the game to make it a true 'sport', but nobody likes to hear that.
-Tyger