in a word or three

my wife and I like totally different movies, I like light comedies and some old war movies, and some cartoons (shrek, ice age etc).

She likes thrillers (I call them chillers) and heavy dramas (blood and guts stuff). There are other differences in our relationship, also, but we work through them and our marriage survives. When I read some blogs and the person is on the third or 4th relationship, and thinking about moving on again, I have to wonder why they keep trying. Maybe they dont try, maybe they have no intention of trying, it seems that its just so easy to change partners, almost like a dance- when the music stops, find a new partner. Eventually the dance will end and they will find they are out of partners and alone.