The marriage isn't bad- it's the divorce that'll get you. I've been married 12 years and things are going fine. In fact, except for a couple of cousins who haven't been married long, I'm the only person on either side of my family who hasn't been divorced. Scary. I think the secret is not having a kid- lots of added stress, and we're left with plenty of time and money for fun. It sucked when my parents broke up and it's a big reason why I'm hesitent to have kids myself.
It can be risky though.
That was an interesting stat earlier on how ~50% of first marriages fail, ~65% of 2nd marriages, etc. I guess some people just aren't very good at it.