So why carry a copy in your wallet, or for that matter go out of your way to even possess one?
Possessing one makes sense. It's an important document. Like having a will, keeping a copy of titles to property and cars, or a veteran having a copy of their DD 214. Those things should be safeguarded. It isn't difficult to do.
Which is why vast majority of people don’t have one
Because, like you, the vast majority of people are stupid.
But upon three separate instances the Constitution directly says who can vote, not to mention eliminating poll taxes, safe to assume voting is implied
Those are specific categories later added because rules by various states excluded those categories.
No one ever said fraud doesn’t occur in elections,
Yes, there are those even on this board who have, for all intents said that. They've claimed that fraud is so rare that it is nonexistent and can be ignored. That's splitting hairs on the subject.
what we are talking here, what the Safe Act addresses, is specifically Voter ID fraud,
No, it covers specifically needing to prove you are a citizen to register to vote, a one-time thing (or occasional if circumstances change), and showing a photo ID when voting to prove you are who you say you are.
California, for example, has actually codified into law that voter ID is illegal, not that you can go without it, but if a county or city in the state tries to mandate it they could face criminal charges.
which as I’ve said and can easily document for you, is minimal at best and certainly not worth the opportunity costs inherent in the safe act
And there it is! You too are making the claim that fraud is so unimportant as to be nonexistent. In effect, you ARE saying fraud doesn't occur. Quibbling over what you claim is an irrelevant and minor thing amounts to just that.
Registering to vote does require ID,
No, it doesn't. California, for example, doesn't require physical ID to register to vote. In fact, 16- and 17-year-olds can "pre-register" to vote in that state.
Information on how to register to vote in California
www.sos.ca.gov
It is hardly the only blue state that has such laws either.
each State has their own requirements, which given Voter ID is nearly nonexistent,
Only 14 states, all blue, don't require voter ID currently. The rest do in one form or another.
currently system works just fine,
I don't think so and my opinion on that is just as valid as yours.
and you recommend the States now spend the time and money to address a problem that doesn’t exist
This is just an irrelevant appeal to poverty.