Though for now, seriously considering moving to the US tends to trigger my Ugh shields. I'm quite scared.

Don't feel bad, according to my models, that's how most people would react (I've tried to train myself out of this sort reaction with some success mainly because I used to be really interested in starting companies, which requires this sort of audacious determination). You don't have to make a decision now. If I were you, I'd just let it be an option in the back of your mind for the time being until you get comfortable enough to think calmly about it.