I wasn't aware that there was one right answer to this question. I had mistakenly thought it was a matter of what a given person enjoys and finds to work for them. I be sure to file this away for future reference, chief.

Whatever.

Personally, I don't get your fetish for trekking bikes, but that's your thing, so cool. Ride on.

-Trevor, who has commuted on hybrids, mountain bikes, road bikes, single speeds, but prefers a fixed gear for speed, responsiveness, and--yes--comfort.