I don't think sex and nudity are a reason for god to burn us all with fire...
But the advent of reality shows by itself might be lol
I for one remember the original. "The real world" now I'm sick of all the crap "reality" shows. They may rott people's brains as much as religion. Hell I have friends who were on Mob Wives.
Reality TV itself is a great sin
Nudity? Well that's just awesome, my American bothers and sisters are such epic prudes lol