Actually, I think that’s fair. I don’t have a lot of faith in my ability to be married for the rest of my life. I believe that humans are wired for serial monogamy, my maternal line doesn’t do life-long marriages very well (if at all), and the longest relationship I’ve ever been in (with my current S.O.) has only lasted all of three years so far. If we’re married for 15 years and still going strong, maybe then I’ll feel more confident saying that I’ll be with him for the rest of my life.
No, I wouldn’t be. If he cheats or otherwise betrays me so badly that I want a divorce, then I’m probably going to be very angry and vindictive, and that’s exactly the sort of situation that the pre-nup is meant to mitigate. In our case, we really don’t have any assets to protect, but we want to specify that we’re both kinky, so that neither partner could ever use that against the other in a child custody battle. The pre-nup is intended to prevent us from fighting dirty in the event that our relationship ends on bad terms.