Well,
As for me, I still use Netscape . . Netscape 4.77 specifically.
Why? Very simple. If I install Internet Explorer, I would like to be able to remove it, completely, if I so choose.
But oooh no! Bully Boy Bill in Redmond will have absolutely none of that . . I've found that the only way to get rid of IE completely once it's been installed is to format and reinstall the OS, because I don't know all the secret stuff to do to get rid of it, and I suspect that it changes some of the OS's files anyway.
But I haven't used IE since the time when version 3 would crash constantly on me, and I do mean constantly!!