cut off one of your apendages for you, should you ask them willingly of sound mind and body and all that?

Reason I ask is... I'm really sick of my goddamn pinky toe. It causes nothing but trouble. I hit it against corners, doors, bedposts, anything that sticks out really. plus when it gets even the slightest scrape on the bottom, it stays irritated for days, and it's just a big hassle. So I want it off. I wonder what kind of balance issues that'd result in.