Yes, creatine is everything you say, but it also seems to cause hair loss in males with male pattern baldness. If you look at youtube videos (for example) they often dismiss that, and then you see comment after comment of people who started losing hair. I'd use it in a heartbeat, but when I did my hair came out in the shower undeniably more. Boo. :(
The study I'm aware of documents a links between biomarkers associated with hair loss and creatine supplementation. Not between supplementation and hair loss. Without clinical data actually demonstrating this, its FUD.