I want to do it for several reasons--first, it will allow me to space out my trees in terms of timing. I also don't mind the wait. We're only talking 5 trees here, no 'volume' by any means. Second, I really like to create something out of nothing. That, to me, is one of the really cool aspects of bonsai. Third is cost and availability. I'm not in to spending several hundred dollars per tree when I could do the same given a few years, some intense studying and help from the local club's 'elders.'
I guess I would be considered a 'newbie' by most. I've read volumes and have tinkered with trees for the past 5 or so years. Learned by killing and mangling many in the process. I haven't had much experience in working with a more experienced person, though. This has caused some weakness in my abilities, specifically the finer points like more intense branch ramification, nebari, etc. I'm learning more everyday by reading here and other sites, however.
At least that's a beginning. It's 3am here, I'm up for the Chinese GP (i'm a nut for that too), so I may not be thinking too clearly...
Daniel