I left Internet Explorer for Firefox because I was unsatisfied and jumped to the first viable alternative. I left Firefox for Chrome for the same reason. I'll jump to the next viable alternative as soon as it's available.
You would think that but chrome is much more insidious than other browsers. I can log in to chrome on all my devices and share bookmarks, apps, sessions, passwords, etc. That makes me a sticky chrome user because I lose all that functionality if I ever switch.
You really don't. I switched a few months ago because Chrome was crashy, it took all of two days, and a few more until I stopped using Chrome completely.
What irks me about Firefox is that tabs aren't separate processes, so one sticky tab will make everything sluggish, but that's about it.
Firefox absolutely does that for you [1]. You can even run your own sync server if you are into that sort of thing [2]. Works on all desktop platforms and mobile platforms that firefox runs on.