I did take a glance at the "Things to think about before you move" thread while I was a lurker, and we've already addressed some of those things, or they are on our lists of to be addressed.
I just can't shake that nagging feeling I'm forgetting something. I'm that person who goes to visit a friend for the weekend who only lives 2 hours away, and after an hour of driving, I start thinking, "Did I remember PJs?"
Our cursory surface analysis of our situation is (by no means comprehensive yet):
I've got the better job and better salary. I've also got better prospects for career advancement. He's not fond of his job, but doesn't think he'll be able to get a new one, even if he moves to America. Additionally, if he moves here, he believes it will be much harder for him to find a job as he doesn't have many qualifications. If I moved to the UK, we are guessing I could find a job and start generating income faster and easier than vice versa.
I've got an apartment and would have to do something about everything in it - store, ship, sell, give. He's been living with his parents, so he would have much less stuff to figure out what to do with it. If he moves, less stuff to ship - and we figure less costly.
We both have debt (student loans for both of us, medical debt for me) we would have to grapple with, although if I moved to the UK, my debt would be paid of faster than if he moved here - assuming the current pound/dollar conversion rate holds.
Both our families are supportive of us moving anywhere, so long as we're happy together. Though, his family is more able to travel than mine, due to health problems. But we would have no problems traveling back to the US to visit.
He's not a fan of losing his 5 weeks holiday and generous allowances of sick time compared to what Americans typically get. He's absolutely not a fan of losing the NHS. I have good health insurance through my employer, but I also have a history of chronic illnesses and hospital visits and despite having health insurance, still managed to accumulate a hefty amount of medical debt. The NHS is attractive...
It seems easier to move to the UK than to the US. From what we understand of the process and fees (granted, what we've tried to research ourselves so far), him moving to the US would be more expensive, and the process would be longer and more complicated than me moving to the UK.
Whatever decision we make, it just seems so final.
Obviously, it's not, and if need be, there's always the opportunity to move back, but it still feels rather...conclusive.