The man behind HBO's Game of Thrones, George R. R. Martin, is often asked about all that sex they have on the show (and in the books he wrote that inspired the show), like "Why do they have to have so much of it and show it on television?" He has provided Reuters a very astute and sensible answer that I think we can all appreciate:
“I can describe an axe entering a human skull in great explicit detail and no one will blink twice at it. I provide a similar description, just as detailed, of a penis entering a vagina, and I get letters about it and people swearing off,” he said.
“To my mind this is kind of frustrating, it’s madness. Ultimately, in the history of [the] world, penises entering vaginas have given a lot of people a lot of pleasure; axes entering skulls, well, not so much.”
There you have it: sex makes the world go 'round, violence makes us sad. I believe we are done here. Thank you, George R. R. Martin.