Personally, my reasons for always keeping a singlespeed in my quiver are: I love the zen-like simplicity of riding one. I think they look super cool. A good steel singlespeed is bombproof. It's an entirely different workout from my geared bike - I live in a really steep place, and I ride my geared and ss bikes pretty much interchangeably, and really enjoy the different workout and experience (even if it involves some walking).