Its a tv show for adults. The reason it has sex scenes is to make that explicit - the number of people who try and make things aimed at adults 'okay for kids' - it ruined the last few Harry Potter films by reducing the violence and dark elements. (okay, HP was young adult but still)
I agree. The Hunger Games is another movie that would have been so much better if it had shown the true brutality of battle.
I am so sick of everything needing to be sanitised in order to be 'family-friendly'. In the past decade, the number of movies that have reached the US box office top 10 which are rated R has plummeted by a whopping 30%. Cinema is moving towards a place where everything must be oriented around children. I don't want television to follow suit.
The problem is with society's attitude towards sex and nudity not with the sex and nudity.