We built our own (couldn't afford it otherwise), and my only regret is that I wish we'd had it when our kids were younger (13 and 15 now).

One reason we built our pool hasn't been mentioned -- we want our kids' friends to come here instead of going somewhere else to hang out. Having a pool doesn't give you an instant social life, but it also gives us old folks the motivation to invite people over more often. It's instant relaxation.

I'm finding -- to my surprise -- that having a pool is like having a mini-vacation in my own yard. Sometimes when I need a break, even ten minutes, I go outside just to take a breather. I didn't expect to enjoy just sitting by the pool as much as I do.
Jo