Same, been using it for over 20 years and probably only a handful of crashes in that time. But I mostly look at dead simple web stuff (like hn) and run aggressive ad blocking so I might not be representative of the average user

Naively, the more stable a piece of software is, the more likely that its failures can be attributed to hardware error.

Months in my case. But I have ECC. Every five years I build a new development workstation and I always have ECC.

I can also go months and don't see crashes (though occasionally I'll hit a memory leak where closing tabs doesn't release it so I'll restart firefox then), but unless ThinkPads come with ECC I don't have it.

The only browser I’ve crashed in the last decade is mobile safari, and that’s probably because it runs out of memory

Its pretty stable for me, except it has some memory leaks. Generally I gotta leave heavy pages open for days at a time to notice, but if I don't close it entirely for over a week or two it will start to chug and crash.

I run FF on Mac laptop, Windows/Linux laptop, and Windows desktop and can’t remember it crashing in years.

Does "Weeks on end" = 4? Or do you not take the latest update every 4 weeks?

That's easy to ignore.

How many DRM-heavy websites do you use? Widevine is a buggy thing.

macOS crashes more than Firefox for me.

Yes