Why are they having such a conniption over Brexit?
We aren’t part of the EU.
Why can’t they just leave the EU and then be exactly the same type of relationship we or any other nation has with the EU?
Norway isn’t part of the EU.
Switzerland isn’t part of the EU.
Iceland and Canada aren’t part of the EU.
A goodly portion of the old Yugoslavia and Albania isn’t part of the EU.
Why can’t they just leave and be the UK again?...................
The EU is a lot like the Soviet Union - a forced ideological, utopian and political construct, kept together by printed money and centralized authority. Once you are in, you can't be allowed to leave. Even the smallest part leaving threatens the whole rationale for its existence.
Why are they having such a conniption over Brexit?
Because the European traveling class does not like to wait in lines with Americans at their first EU airport. To get to a good beach as a resident of the UK you fly in flipflops to Spain on a 39 dollar flight.
Why can’t they just leave the EU and then be exactly the same type of relationship we or any other nation has with the EU?
They can, they will then only pay the pensions of people who earned pensions in the uk. The deal with the US will be sweet because autos and trains are not huge UK exports.
Why can’t they just leave and be the UK again?
Because the UK governing class would be accountable again. Unless you are boris this scares the pooh out of the backside.
Money corruption and muslims
It seems like the number one problem is that their country is kind of split, people who think of themselves as countrymen are not actually in the same country. And since Ireland is in the EU, if Britain drops out, EU wants to impose a “hard border” with Ireland, essentially cutting off a free trade zone that has existed forever, and imposing taxes, fees, and paperwork.
Much of the bargaining with EU has been about trying to avoid this kind of border, but the EU realizes this is the leverage point, and have been very adamant about it.