Chrome stopped all updates (including security) for older Windows versions some years ago. Firefox gets security updates just fine so far (I believe Vista supp

Chrome stopped all updates (including security) for older Windows versions some years ago. Firefox gets security updates just fine so far (I believe Vista support will get dropped soon). Windows 7 support will continue for a while. I switched my parents' Windows laptops to Firefox 2 years ago. Firefox on Android (and the new Firefox Focus) feels faster and lighter on resources. I prefer Firefox on my Android devices. For me, a third reason is that Chrome has started segfaulting big time on my Ubuntu 14.04 LTS laptop. This started very recently. Switched to Firefox. Aside from all that, for me it's just the principle that it's better to encourage multiple excellent feature-rich cross-platform browsers instead of ending up with a monopoly.