Surprised that nobody's brought this up, but the issue isn't with religious freedom, it's that Americans have gotten to the point where it's just one of the first things you do after having a male child because you're expected to. It's really more habit and custom than anything else, and that's what I'd liked to see changed. Nobody other than Jews give a shit about the religious aspect. If you wanna snip your son because you're part of the tribe, then knock yourself out. But don't just cut part of his dick off because you're American and you want him to be like everybody else. Somehow or another, it just became the accepted thing to do, and honestly, circumcision should be the exception, not the rule.
As for the lack of sensation, who could tell? Unless you were stupid enough to have it done after you were old enough to have been sexually active, you have no frame of reference.