I have lots of bikes...carbon, alloy, and steel. I usually choose my SS when I want something light with no frills to ride around the city (park in the garage I use for work...use the bike to get to different parts of the city for beer and whatnot), or I have to put it in the wife's car, or it's some big group ride consisting of a lot of not very fast riders for some kind of event. If it's the latter and flat, I'll likely choose my 3 speed though.