I've been using Firefox for as long as I can remember. I'm currently looking for a replacement. It seems, every version of Firefox erodes privacy protection, making it easier for advertisers. Granular cookie blocking disappeared years ago, leaving just a few basic blocking options. Changes have crippled or excluded use of some add-ons; in my case Umatrix, which had been working on a previous version. About:Config is no longer accessible on mobile. I can't even set a homepage anymore!