I've installed kickstands on hundreds of bikes. In the 70s, everyone wanted one. This is one of those fads that runs in cycles. Maybe in another 10 years everyone will want one again. They do have to be of the proper length or you can get a bike that tips over very easily (some are cut to length with a hacksaw). The only part of kickstands I couldn't stand was people riding with them misaligned, so that every time the pedals went around, the crank hit the kickstand with a loud "chunk". Personally, I'd rather lay my good bike flat on the ground where I know it can't fall.