Jailbreak: Worth it?

I'm currently an Android user and have been considering making the switch to iOS. I'm really intrigued by the customization options jailbreaking an iDevice offers, but the question remains: is it worth it?

From what I've read, you void your warranty (correct me if I'm wrong) and iOS can become unstable, yet I see a lot of Verge readers posting jailbroken homescreens in the Forums. Are all these people flying sans warranty/AppleCare?