Firefox is adding better profile UX (it’s currently behind a flag), but it also supports ‘container tabs,’ which can get you halfway there. Chrome, Safari, and Arc (and other Chromium-based browsers) support profiles natively as ‘first-class citizens.’
As someone who recently switched from Chrome → Arc → Firefox, and literally cannot live without browser profiles, I’m curious about how others use their browsers.
I also use profiles, for work and leisure. Mostly for differentiating extensions and the data they get access to (no container tabs at work, and very few extensions there overall), but also for bookmarks.
[0]: https://addons.mozilla.org/en-GB/firefox/addon/temporary-con...