This is my singlespeed.....a bog standard XL 221v.

http://www.thylacinecycles.com/galle...StencilAlley03

21.5lbs of STEEL, BABY! YEAH!

*cough* okay, why singlespeed? Well, for the majority of riding I do, you don't need gears. That simple.
Of course, if you live in the middle of Nepal, then gears are probably the order of the day, but for me, singlespeed is cool. You get on and ride. Clean the chain a few times. That's it.

It's the bike I ride most of the time, and I've been riding predominantly singlespeed for quite a few years - probably since 98 or 99.