I started using Firefox years ago because I liked it better than Internet Explorer, the only major browser at the time. I’ve come to further like it because it’s made by a nonprofit devoted to keeping the web open and free, against the trends of centralization and surveillance.
“Mozilla makes the only popular browser that is open source, uncompromised by commercial parentage and on the side of the individual.” — Doc Searls, “Hats Off to Mozilla” (h/t Tantek Çelik)