Well, 17 is legal in my area. And there are a few girls who, though not 17 yet, seem like they might still be desirable to me when that reach that mystical and magical age when they instantaneously develop the maturity and experience needed to decide for themselves who they can share their bodies with.

And if, by some (admittedly rather remote) chance they expressed a willingness to do so at 17 + 1/365 years old... well... my wife might not be too happy that day... but too bad for her.