Because I have been using the same web browser, in terms of ideology, heritage, and codebase, for the last 30 years.
I mean, it’s hardly perfect. But it’s far better than the alternative (Chrome & derivatives). And now that Tab Mix Plus is available again (albeit in a somewhat unstable non-webstore XPI that requires you to hack Firefox to successfully install), I’m loving Firefox & LibreWolf all the more.
I was referring to NCSA Mosaic, back in 1993, but yes. Netscape was forked off of Mosaic, and I started using Netscape myself with v2 when I first saw someone else using it.