The reason I switched to Chrome way back when from Firefox is that they changed the UI and that broke some of the add-ons I used. At that point I thought "well,

The reason I switched to Chrome way back when from Firefox is that they changed the UI and that broke some of the add-ons I used. At that point I thought "well, the browser looks like Chrome now, it has as much customizability as Chrome, but its JS engine is slower, so I might as well be using Chrome." At the time I was playing a browser-based game, where the speed of JS mattered a lot to me. If all the add-ons had kept working on FF, then I probably wouldn't have switched browsers.