When I first came to this site, I wanted to play the same character I had played so many times before. So I made a Bothan Spy named Strask. I joined the CIS, and tried to be as active as I could.... but there was nothing for me to do. I couldn't figure out how the site worked, and I wasn't getting anywhere on that character. I decided to put him away for the moment and try making a Jedi. After all, why not make a Force User.
Two training threads, a few miscellaneous stories, and one invasion in which I did basically nothing, and Saran was a knight. I suppose it was simply because at the time there was the Sith War, and EVERYONE was promoted, but I took it. As a Jedi, even as a no post padawan, doing things, and being part of threads, was easy. Higher ranking Force Users want to help the little ones succeed, IC and OOC, and as such, writing one was easy. You can get of the ground with very little effort in a faction. NFUs don't work like that.
Even after Strask had been promoted to head of the Spynet, I remember most of the people in it were Force users. I think two of them weren't, including me. A NFU needs a nitch, sure, but no matter what, there will often be a Force User who can do it as well, and will usually claim to be better.