My Windows 2000 machine had 512MB of RAM. With it I could browse the web, run full-featured word processors, scan images, edit images, play 3D games, edit / compile / debug C and C++ programs, and so on.
If memory serves, my office machine about that time only had 128MB of RAM. It was slower, but it could do just about all of that stuff, too.
I’m not sure there are any broad categories of tasks I use computers for today that I wasn’t already using my Windows 2000 machine for back in 2001 or so.
It’s hard to fathom where all the RAM in modern systems goes. A million somethings is a lot. A million bytes is a huge amount of information. War And Peace is under four million characters.