It's not a "practical" thing for me... It's a fun thing. Fixed is just so different than anything else It's just fun. anyway her's what I got.

Practical:

-one less moving part (small +)
-Imeddiate engagement and ultra smooth circles. I love pedal feedback on fixies.

FWIW, i have a flip flop hub. i dig 'em both.

Apples and oranges my friend.