My Vaio FE11s from 2006 also still works well. I'm not really surprised. Especially when you do text based stuff. During the time I wrote my MSc thesis (in 2005) in LaTeX, I used a very old Toshiba Satellite (it looked like this Toshiba Satellite Pro 420 from 1996 [0]). It had a 2GB hard drive so I had to carefully select the software packages that Slackware wanted to install. But it worked a I wrote parts of my thes…
There are a few. They mostly use the same controller chips that CompactFlash cards use, and you may be better off getting a high-end CF card and an adapter. SATA to IDE bridge chips also exist, but I doubt you'll find an adapter packaged correctly for use in a notebook.