Did God invent circumcision to take sexual pleasure away?

Holy cow, the kinds of things people think up. Haha. I'm amused in many ways by this thread.

Anyway, masturbation isn't a sin. There isn't a single passage of scripture that even alludes to it. There are tons of laws condemning all sorts of sexual practices that I had never even heard of until I read those parts, and I would think that if God had a problem with masturbation, he wouldn't have hesitated to inspire Moses to write "Thou shalt not touch thyself."

And I'm a Christian too.