I agree 100% Happy — I think it’s unnecessary, but I don’t think anyone has the proper experiences to really know how circumcision affects sexual sensation. All we know for sure is that whatever effect exists can’t be huge, else we’d find differences in circ and uncirc men’s self-reported sexual satsifaction, rates of ED, etc.
I also agree with you that foreskin restoration (and adult circumcision) don’t directly answer any questions about infant circumcision. I’m just saying that they give some empirical basis for judgment, whereas everything else is just theoretical speculation. (The point of my neural plasticity argument was, indeed, just to establish that most circumcision arguments are speculation; we really can’t know, one way or the other, for sure.)