Firefox is a truly fantastic browser now. I've been using it again for about 2 years and haven't regretted it at all. There have been a couple of weird feature hiccups but generally Mozilla seems to get things right.
I wish Firefox was as sleek, fast and no-nonsense as Safari on the Mac, which is my everyday browser. I vastly prefer the idea of an open browser that is not tightly coupled to a particular industry giant. And I wish Firefox actually had a viable Safari competitor on iOS, so that I can sync my state around. Unfortunately, while Firefox has made significant leaps the last couple of years, it's still not a viable alter…
You might want to take a look at the Firefox Multi-Account Containers Add-on, it lets you set domains to always open in a given container, which cuts down on the micromanagement a lot once you get it "trained". [edit: This is not well-advertised, it's accessed through the context menu (right-click) on a page when you have it open in that container]
https://addons.mozilla.org/firefox/addon/multi-account-conta...
> i.e. all web sites should be "contained"
It's possible to enable this for most intents and purposes with "1st party isolation", which came from the Tor browser. Some info here: