War movies don't try to sicken you like a film such as Saw or Audition does. It's the same with a sex scene. I don't mind sex scenes or nudity, but there's a fine line between sex to support the story and story to support the sex. Many films just throw in a long drawn out sex sequence for the sake of it.
It's kind of like Game of Thrones. I enjoy the show, but every five minutes somebody is doing some raunchy doggystyle rompin, and it serves no purpose other than to fill HBO's titties 'n' ass quota. I can think off of the top of my head and only count maybe 2 or 3 sex scenes that actually moved the story forward.
It doesn't bother me all that much, but it does get ridiculous. Sex scenes are kind of like a commercial break. If I want to watch porn, I will watch the good stuff.