Comment by dataflow

Thanks for asking. Depends what time period you're asking about. My memory's faded so there may be inaccuracies here or things may be out of order, but this is what I remember.

There was a long era (years) when I loved Mozilla and used Firefox -- and then even Waterfox, IIRC because it was 64-bit -- exclusively. (As well as Thunderbird.) I did not like Chrome. IIRC at some point they started feeling like every update made them more bloated, broken, and unbearable in various ways. I forget all the exact issues but I distinctly remember rendering was a big one for all of them (I think it happened around the obsession with GPU rendering), my extensions constantly breaking or getting disabled because of "compatibility" issues forcing me to keep toggling flags in about:config being another, my toolbar styling/customizations getting constantly messed on every damn update up being another, the tab bar getting moved up like in Chrome when that was very much one of the reasons I liked Firefox being another, and slowness/bloat being another. I wasted too much of my time into finding workarounds, but eventually I couldn't take it anymore. Giving up everything including extensions like Greasemonkey and Stylebot and having the ability to customize everything just so I could have a better experience was painful, but I bit the bullet and switched to (I think Chromium first? and then) Chrome.

After that I basically stuck with them though I kept a Firefox around and updated it once in a while to see if maybe they would come to their senses and start improving the UX. They removed support for old-style extensions which immediately was like a punch in the gut. Regardless, a few years ago I figured maybe times have changed so I spent probably weeks on it (if not longer) and even sank quite a bit of time into manually porting porting my custom local Chrome extensions to it just to make sure I was giving it a fair shot. The snappiness was maybe better than before but overall I just felt like they didn't give a damn about longstanding UX issues people have been complaining about for years, and were too focused on other priorities. So I've stopped wasting more of my time on it until it passes a couple litmus tests, which it failed again today.

And don't get me wrong, Chrome has had its own issues and frustrated me too (MV3 being the most recent and frustrating), but at least it's not completely defeating the very reasons that drew me to it in the first place.

But the point being: I believe I've given it a fair shot enough times in the past, but I also have better things to do than fight with a browser vendor over the very things that drew me to their browser. For Chrome the speed was probably the biggest factor, and for Firefox it used to be UX/customizability. One of those companies understood that and never compromised on their core strengths, but the other never seemed to get the memo.