I'm toying with the idea. I only have the one child and am 33, but the wife and I are firmly in the "pretty sure another kid would kill us" and she's 45 so I was thinking about just going for it. She is actually not so on board in case something happened between us and I ended up wanting kids with another woman. Very considerate of her to consider the possibilities, but I'm pretty confident that one is enough. Unless something happened to my daughter, God forbid, I can't imagine having another regardless.I've had it done, last year (was 32). You get asked a few questions about if you really want to do it and that sort of thing. Wan't too bad, but did make me twinge when they stick a needle in your testicles. Also if you have it done, don't look down. I did and i now know what the pipes look like lol. Oh my other piece of advice is wear tight underwear for the first week, gravity is not your friend lol.
That "what if" mentality, and the fear of chronic pain that some people get (I remember the old thread on this a few years back filled with some horror stories) are the only thing holding me back really.