I just found out that in the US if you shift states you have to register for voting again.

In the UK you are, basically, automatically registered once a year. I'm not sure what happens if there's an election in the meantime but I can't imagine it's more than an email or phone call to the office of the local returning officer who runs elections, which will send you a one-page form for you to return by post.

The US is way bigger in both people and land area and yes sure aspects of voting are part of state not federal government powers so that adds complexity, but you always get the impression that they don't want to make it easy for anyone to vote over there.

We keep dividing farther and farther. People actually hate each other for being from other states. It’s weird. Fkn stupid and weird.

Um, I'm not totally positive, but I believe if you change where you live, period, you have to register again...

Spin theory (and this might not be true for all areas, but in some) you can live in the same street and same voting district and have to reregister to vote with an updated house location.

Absolutely not... states don't trust their own state with handling the information, so why are you going to trust another state?

And different states have different laws and requirements... to register to vote.

Registering to vote, when switching states makes sense, as the requirements can be totally different... when it's the same exact voting district, it makes less sense to me though.

Yes and no...

If just looking at the laws and law books, yeah you can absolutely make that claim.

Each state has their own system. Which is absurd. There should be a federal election system.

Voting does from state to state that is why there are different laws in each state

Now a federal voter id would allow you to transfer your voting privileges between states easily.

Well counties make a lot of money selling names and addresses of registered voters

If you move in the same city or town you likely need to re-register at the new address.

Had to do so when we moved like 5 minutes away from where we were before.

There's a lot of stuff that should be handled at the national level and dissolved at the subnational level, but most of us here in the US are not rational at all, many of us are just trying to stymie democracy at every possible turn, in the name of Jesus, the dollar, guns, or whatever.

The concepts of a quantity ("states' rights", "dry counties") or an inanimate object (flag burning) often have more rights than living, breathing, individual humans in the US as well. It's beyond absurd.