Why did God ordain the rite of male genital mutilation known as circumcision for the Jews?
God being the designer, and creator could have made man any way He desired. If He was anti foreskin, why put it on in the first place? Arguably He didn't have too. He could have made men foreskin free as the au natural model. If it was something just for the Jews he could have blessed Abraham with a genetic variation for his male descendants. Snipping didn't have to be part of the plan.
In many places today circumcision is the default, it hasn't always been that way. All a mom has to do is check a box on a form at the hospital and it happens.
No man has ever wanted a sharp object in the vicinity of THAT part of his body. That's why they get you before you can think about it, or have any say. Most guys aren't in favor of any procedure that would reduce the perceived size of his manly appendage. It not only doesn't sound like fun but it seems like it would hurt, a lot.
So what is it about a flap of skin on a wiener (that could have been left off during creation) that drives God bonkers?
Back in Genesis God is having a conversation with Abram about a legal agreement or covenant that they are going to enter into. The covenant isn't much of an agreement, basically God makes a commitment to do a lot of great stuff for Abram. Abram gets his name changed to Abraham and all the guys get their manliness trimmed back a bit. This "deal" is an ongoing ordeal for all the generations of the decedents of Isaac. A few hundred years latter the deal gets amended to; snip-snip, and keep the law of Moses. Basically the deal remains the same for the Jews, get it sniped on the eighth day or else.
I'm willing to accept correction on this point, but as far as I can tell nothing in scripture tells us why. No explanation is given that I'm aware of. Since the answer isn't given, I'm going to take my shot at it.
I think the answer is rooted in two things. The first is in sin. The second is the inherent nature of women.
Every married guy can related to the fact that a woman's mind (and her mouth) don't work they way we think they should. Women keep roughly a quadzillion different things floating about in their heads at any one time. The female of the species has this insane need to talk about whatever is going on in her head. She doesn't know she has this need and she doesn't know that her mouth is going speak, but trust me it is.
It seems like every time the Jews got in trouble with God, the problem was rooted in idolatry. Throughout history the Hebrews would follow God for a bit and everybody would be happy. Then they would get involved in worshiping idols and everything would get bad for them. Most of the time part of what made the idol worship interesting was all the fun stuff you did to worship them.
An otherwise good Jewish boy gets led astray to go worship idols. This worship was offered either as animal or human sacrifices and a drunken orgy, or as a visit to one of the many temple prostitutes. He pays the money. She starts getting undressed. He's thinking to himself, "this beats prayer shawls and phylacteries". He strips off his robe and starts to make his move. The girl points and much more loudly than needed and in her most concerned voice asks, "why does IT look like THAAAAAT?".
"Well, it looks like that because I'm one of God's special people that would never worship anyone other than Him" he thinks and sins anyway. Circumcision was a last ditch reminder that the Jews were God's special holy people. These people were supposed to do some things and not suppose to do others. God knew he could count on temple prostitutes to remind His people who they were better than they could remind themselves.