No offense but I think this is a stupid question. It's not a toy. It's a weapon. It's for battle, for espionage, for getting the hell out of a tight spot. If an alien crash-landed in my town and said this was the only thing that could hold invaders back, then yes, I would do it. Use it as a toy? I can't I would never do it but I would be focused on staying alive. How many times were the Ani's almost killed by a fellow earth creature? Sharks, racoons, golden eagles, etc, etc...
I also kind of like the body I have. I'm not pretty or skinny or anything but the thought of scrapping it for something else kinda creeps me out. I'm also afraid I'd be a little like David. When someone is poor all their life (like me) and they're given the means to obtain anything they want spells trouble. It would start out small but then I'd be able to rationalize my way up to bigger things.
So no, I wouldn't sacrifice anything but if I something to focus my use of it (you know, like an interstellar war) then I'd accept it.
Or maybe I'm taking this waaayyy too seriously...