Sorry to hear about this, and thanks for the warning.

I agree that the hardest thing about incidents like this is that it shows you how awful people can be. Whenever I've had stuff stolen, I find it helps to remember that, no matter how crappy those guys made you feel, their whole life is crappy, and probably always will be, maybe always has been. It is a sort of karma. Choosing to beat a guy up and steal his bike, and everything that went into that choice (getting addicted to something, joining a gang, or just being brought up into that lifestyle and not wanting to do better), is a pattern of behavior that is eventually going to land them in jail, cost them a job and hope of ever finding a good one, maybe cause the end of a relationship, or at least a lot of arguments and stress, maybe they lose contact with their kids, who will probably either grow up to hate them or get into all sorts of trouble themselves. They'll get arrested, beaten up, never enjoy much stability, and likely loose a few teeth and brain cells along the way. They probably live in a slummy rental, and can't afford to support their addictions without resorting to theft, let alone even think about saving up to take a trip or move to a nicer place, or to try to get a job and health benefits. They'll probably live short, unhappy, pointless, and unhealthy lives. So, I find when I think about that stuff, I'm less angry. I can feel sorry for them instead of angry at them. And even while I'm still really furious, I find it still makes me feel better to think about that stuff, if in a more vindictive kind of way.