I think that this fundamentally comes from thinking that unions are only there for the worst possible jobs in the worst conditions, or where outright abuse occurs. And also from the (imo incorrect) idea that you should have those bad conditions before organizing.

Unions even the balance of power between the executives and labour at an organization. Even if WMF conditions are perfect and there's never any abuse of power (which seems unlikely) -- you should want a union in place _before_ an org decides to do layoffs, or force a practice on its workers that they don't want.

I worked at a tech company a few years ago and the standard anti-union cliche from execs was "we already treat you well" but then about 20 months later they laid off 2000 people, including folks on parental leave. A bit late to try and organize a union at that point.

(edit: typo fix)

Yes, but if you don't allow corporations to lay off people when it makes sense you end up with low salaries, meaningless jobs, and economic stagnation (like Europe).

Europe is nice to visit but a giant pain in the ass to do business in. Certainly don't even consider aspiring to anything. If you can manage that, then yeah...France, Spain, and Italy are cheap and have good food and weather :-)