I switched to firefox a few months ago because of this. However, I just switched back last week. Overall firefox is a better browser. The ability to screenshot in the browser is so useful and I used it 10x per day, not having it in chrome is a real pain.

But.. nobody tests on it anymore I think. Lots of popular sites are very slow and laggy with it, including sites I need for work. I don't think this is because of inferior technology, I think I just think nobody spends the time to make sure things work well on firefox. I could split-brain and use chrome for github and some other stuff but that is such a pain when clicking links.

The other issue is I think firefox support will only get worse. Their market share is back to where it was in IE6 days and dropping.