I emigrated to Canada pretty much on a whim (using a fiance visa) and have fared quite well there. We (my partner and I) are weighing the possibility of emigrating again to Portugal which offers a rather reasonable golden visa - with a wide variety of European countries offering "trial" visas for workers under 30 with the most bare of requirements.

As a US citizen I've contemplated getting my wife residency down there and it's simply ridiculous - as are the hoops I'd have to go through to relinquish my US citizenship and that only matters because the US feels entitled to own me even though I haven't resided there for nearly a decade at this point. US immigration, from the working visa angle, is extremely unpredictable and only really estimable if you've got a large corporation with a whole bunch of lawyers to get your back - spousal visas aren't terrible but most come with some seriously onerous lifetime costs to execute (like taking a year off working).

I know there are a bunch of European countries and they've all got their quirks to immigrate into but you can really trivially get an EU passport and then move around within the EU.