Yes it is. It's lost most of it's original function, thus vestigial.
As for the foreskin there are arguments for and against whether it's vestigial or not. There are a number of functions it does preform such as protecting the penile glans from drying, contaminants and tactile damage also it provides immunology defense in several ways. Not to mention the less vital but perhaps to some more important significant amount of nerve ending in that part of the body.
"If we could prove that there weren't any cons to the removal of the structures mentioned, then you could make an argument to remove them early so that the people in question never have to risk getting those conditions..."
Well, there is no proof it is useful, and is probably harmful as you remove something obviously protecting.
It is permanent, therefor it is mutilation.
I consider it in the sense of law a bodily modification. As all of those from tattoo to self-amputation I say only grown-ups, and only when they give their autorisation from free, conscious will shall be allowed.
Circumsicion, in a non-religious way, is for me necessary. It removes the foreskin and exposes the dirty smegma that you have under it(gross, by the way). It also makes a person more mature(just an opinion).
Proper and regular cleaning especially there is something you should do anyway, the foreskin is then not much of a hygiene case. Depending on how narrow it is or how sensitive your mucosa is, an individuum might choose to remove/keep it, but there's no general improvement to be had by removing it. And considering your last opinion, I don't understand it, but ok. It's certainly not a reason that makes such an operation necessary however.
Circumsicion, in a non-religious way, is for me necessary. It removes the foreskin and exposes the dirty smegma that you have under it(gross, by the way). It also makes a person more mature(just an opinion).
Perhaps you should also remove your fingernails so you can clean the dirt from underneath them? The foreskin can be pulled back to expose that area for cleaning, no need to cut it off in order to clean under it.
I think it's a good idea to snip the tip. I've seen some pretty nasty/decaying/rotting/etc. foreskins in my day (don't ask). As a matter of personal preference, I think a circumcised member looks much better than one that hasn't been liberated.