I guess the pragmatic side of me wants to put that investment to some kind of use, and for me that would be exercise. Our pool is 17x33 (came with our house) and, for me, it's just not long enough to do laps. I find I can push off and by the time I start my first stroke I'm already at the halfway point. Two or three more and I'm hitting the other end.

I should say that I spent most of my early years as a lifeguard and swimming instructor trainer so I have decent form.
But still, for any adult who knows how to swim, I think 33' just doesn't cut it. I have a dream of building a lap pool, one lane, 25 yds long, adjoining another free-form area for more hedonistic enjoyment.

A boy can dream...
C.