How selective has everyone become now in what they expose themselves to?

Now that I'm actively remembering and recording my dreams, I've become pickier than I was before in everything I absorb. For example I used to love the horror and thriller genre, but I've started to shy away from it. In general I've been weeding out material I don't care to have in my head. I guess I never considered that I process that junk subconsciously and I never particularly wanted it to show up in my dreams.

I can understand people adding material to be used in the dream world, but does anyone else filter things out?