The same thing applies to the genital mutilation endured by girls in some parts of the world. But in that case it's generally agreed throughout the Western world that we're talking about "mutilation" and "abuse". Somehow circumcision managed to escape these labels despite being essentially the same.
Anecdotally, every person I know to have a circumcision performed on them had it because "it was normal" in the society, not for any religious belief. Not wanting to stand out is a good enough reason for many. In some places an uncircumcised penis is (was?) considered "gross" or "abnormal" and many parents just want to avoid that for their child.
It's not remotely the same — if you are circumcised, your dick still basically works fine. I mean, yeah, wtf, but it's a minor change. Like getting a tooth pulled, or an appendectomy, for no reason.
You get (most values of) the "girls version" around the world, and it's basically equivalent to chopping off the entire top half of your dick. The _important_ part.
Totally not in favor of either. But there is no equivalence here.