Most of my bikes have kickstands but when photographing them I like the bike to be vertically straight so I generally prop it against something. Twice now I've happen to catch my bike falling on camera which I thought made interesting photos.
You may be on to something. The only bike I've had fall started the domino effect, managed to dump 4 bikes. Nothing severely damaged but my ego.This is what happens when you have a lot of bikes, the nice ones always fall over. It must be some kind of cosmic mystery for us to ponder, right up there with why a liter bottle of Coke costs more than a 2 Liter bottle.