I can't speak for other beliefs but according to the Bible:

Mark 9:43 "If your hand causes you to stumble, cut it off; it is better for you to enter life crippled, than, having your two hands, to go into hell, into the unquenchable fire"

Matthew 18:8 "If your hand or your foot causes you to stumble, cut it off and throw it from you; it is better for you to enter life crippled or lame, than to have two hands or two feet and be cast into the eternal fire."

translation..

"And if your right hand causes you to sin, cut it off and throw it away from you. It is better for you to lose one of your body parts than to have your whole body go into hell."

so... if we can reach the conclusion that it IS indeed a sin, then I'd probably have no hands.