That's insultingly patronising. And I'm not just saying that because I'm new myself.
The assumption that the post count says anything about the competence of a user is just wrong.
You're mixing things up. Nobody in this thread said anything about a requirement. Apparently some people just prefer the extra reserve over price (and maybe power consumption).
That being said, I can think of two scenarios I might implement on the Pyra, that would profit from more RAM:
1. Virtual Machines: Often times I run several VMs in parallel that don't do a lot. They're basically just sitting there and waiting for something. So they don't stress the CPU a lot, but their memory overhead makes it comfortable to have more RAM.
2. Seeding torrents: My HTPC (an old notebook with 3GB of RAM) runs 24/7, partly because it runs one (sometimes two) of these idle VMs, partly because I put its idle uptime to good use by seeding a lot of the Debian images. Obviously these images combined are a lot bigger than the available RAM. So whenever I leave the machine alone for some hours, the images tend to push my user programs out of the cache, effectively increasing their next loading time. With more RAM I can delay that process. The upgrade from 2 to 3GB basically changed the situatioin from "barely tolerable" to "mostly fine".