It's much like how COBOL and Fortran take quite a beating today. But they were breakthroughs at the time and were really important.
In the context of their time COBOL, FORTRAN, et al were important, but today they're lumbering proto-dinosaurs. It's more disturbing than anything else how much out there still uses it and should've been replaced long ago.
I was going to mention flash as well, and what I like is how flash is finally on its way out, and mostly only gets used now for video. We fail over to flash player for some of our older videos which are not re-encoded (we've been slowly re-encoding to something HTML5 friendly, but there are 2 million videos so it's taking a while) and also fail over if the person simply doesn't have HTML 5 video playing for whatever reason.