Firefox was always my default browser since ever but 2-3 years ago I switched to Chrome full time. Every month or so, I try Firefox again with all the websites

Firefox was always my default browser since ever but 2-3 years ago I switched to Chrome full time. Every month or so, I try Firefox again with all the websites I care about, check how fast it feels, the JS performance, etc and, while it's pretty good, Chrome still is/feels faster. My tests are pretty subjective at times but I never find a huge reason to switch from Chrome (privacy issues aside). Each time I think I've spend too much time doing this dance and I take longer to do it again. So I don't know about the 2016/2017 comparison you made and it being orders of magnitude better today. Maybe in some other area that is not performance? To be clear, Firefox is not bad. It's actually pretty good... maybe browsers have matured enough that the low hanging fruits have all being addressed and it's hard to make Earth shaking progress (that would justify a switch).