I find myself missing the creativity and passion of the old internet, rather than the specifics of how they were built. Is it really so bad that these sites have some scripting involved?
I miss Netscape on Windows 3.1 on a 4:3 CRT monitor in 256 colors with red on yellow Comic Sans bold italic H1 blink tag marquee with an unnecessary trail of ellipses scrolling left to right with 3 iframes with Java and Flash applets with a redirect to goatse.
But seriously, I miss Pythonline, gopher, finger, IRC, and sunsite.
IRC is still up, from Libera.chat (ex-Freenode) to efnet and so on. Gopher has lots of usage at gopher://sdf.org, gopher://magical.fish and gopher://floodgap.org.