If I'm 220 from the green on a par 5 (which is about 3W distance for me), I'm laying up to a comfortable distance and leaving myself an easy wedge in. The chances of me hitting a green from 200+ are slim to none, while the chances of me getting into trouble and blowing up the hole while trying to do so are pretty good. As Dirty Harry famously said, "A man's got to know his limitations".