> Yes, the foreskin doesn't grow back
Lip and tongue ties don't grow back. Neither do teeth. Parents remove their kids' body parts if they think it's best for them. Are straight teeth healthy or just aesthetically pleasing? Is clear speech healthy or just valued in our culture?

> Yes, because travelling through the birth canal is required to live, and doesn't affect sex in later life. Also, it doesn't result in any amputations.
How does circumcision affect sex in later life? If circumcision is amputation, what is removing an unsightly birthmark? Or as I've said, teeth, extra skin in one's mouth...

> We do. There's a ton of nerve endings there. Slicing of a particularly sensitive area (due to the concentration of nerve endings there) is going to be painful.
Being birthed causes extreme trauma. That's why doctors measure a baby's oxygen and heart rate. So clearly some amount of pain is worth it if the gain outweighs the pain, no? Then you have to ask what is gained through ritual circumcision. The gain is religious and cultural value, so it's hard to measure precisely. But, you know, Christians give alcohol to kids every Sunday and no one's complaining.

> If you want to do it, you need to show some evidence that it is not, not throw your hands in the air and say "well, we don't know").

I'm suggesting that we consider not everything that seems obvious is in fact obvious. Should I keep my kid from having routine blood drawn or vaccination because the needle hurts? Stop clipping their nails or cutting their hair? These are all cultural practices, there's nothing intrinsically good about grooming in this way.

> I think your are deluding yourself - few doctors visits or trips to the park results in cutting off a very sensitive part of the body.
I am trying not to delude myself. I am trying to clarify one thing for myself and one thing for others. For others, I want them to understand oral suction during a bris is basically unheard of outside of a fringe group. For myself, I'm trying to clarify if circumcision results in long term pain (psychological or physical)

> It is a fairly easy topic.

I think we agree. As I said, it should be easy to talk about and yet there are multiple factors one must weigh. This makes it compicated, but I'm happy we're talking about it.

> The question of "Should we amputate a part of a newborns body, one that affects future enjoyment, and known to be incredibly sensitive" is an easy one to answer.

I think the question is based on a false premise. How can one measure the joy of sex, and even if you could how would you say "this person gets less out of sex than if he had his foreskin." How can you say what the same person would feel in a hypothetical scenario? I'll just point out this very argument dates back to antiquity. Plutarch has a piece about Jews and discusses ritual circumcision - iirc he takes the stance that circumcision leads to more sexual activity and depravity because the penis is always uncovered. Greeks and Romans thought uncircumcised penises were vulgar, gross, and a sign of overt sexuality. So I would be fascinated to understand the opposite position, which you put forth, that circumcised men get less joy from sex.