I want to ammend my comments about when gears would be nice. This applies to freewheel generally: dealing obstacles taller than the bottom bracket.

It it is nice to approach obstacles with the cranks where you need them, or use the freewheel to ratchet over stuff. Fixed gear makes one a more adept rider in this regard, but I've wanted a freewheel here and there.

and I ride clipless all the time. It has saved my ass many times when smashing through things that would otherwise knock my feet right off the pedals. I've also taken some crazy bumps that rocked me so bad that my feet were the only thing attached to the bike.