Tell Me I'm A Screwed Up Mess
My opinion on hax is that I generally don't let it bother me. What bothers me though is when the opponent acts like it's your fault that you happened to land a crit or get a lucky paralysis or burn off of a 10% chance move or something. That bothers me like no other.
Essentially I dislike the idea of crits in competitive play, but other types of hax (such as misses and "paralyzed, can't move" type things) should still be around. Crits make 2HKOs OHKOs which removes quite a bit of skill. At least with things like paralysis you generally have to land a Thunder Wave which I'm sure isn't used JUST for the half speed on the opponent.