I completely understand the reluctance to RAW processing as it can be intimidating. But just play and have fun with it. Don't take it too seriously and realize that it will take time, like all things do, to learn. Guy is right though, a workshop really helps. Even a friend who can help is great. I don't know how many times I had to ask people how to do simple things in PS. Also, search online, there are alot of free tutorials for PS and other programs. They have helped me alot.
There are many times that using RAW can make post processing easier. Especially if you have a photo with a difficult white balance or short dynamic range. Having said that, JPG processing nowadays has gotten pretty good. Very often the JPG looks just fine. It depends on how picky you are. The biggest problem that I have with in-camera JPG processing is in the area of noise reduction. Most small sensor camera just go too heavy on the noise reduction. The GRD and the GX100 are exceptions when it comes to this. That is why I finally decided to move in that direction. I would much rather see noise/grain than smeariness. But I shoot mainly B&W so the "grain" isn't as objectionable. It appears that the new Ricoh processing engine does add some extra smeariness to the JPGs at higher ISO. Even with the adjustable noise reduction. And from what I have read Ricoh will not turn it off completely. They basically say that if you want it off just shoot RAW.
I just purchased a GX100. My budget was low and I knew that if I was going to go for the GX200 I would have to wait at least until this time next year to afford it. There should be a few used 100's at decent prices surfacing with the announcement of the GX200. A good time to try one out if you haven't yet.
The GX100 is a great little camera. Fun and very intuitive to use. It actually begs to be used. Not too many cameras have done that to me. Funny how a office machine company like Ricoh can make a tool with better photographic controls than the likes of Canon or Nikon. The G9 is nice but Ricoh just has it up on them with their intuitive controls, lens, removable VF, etc. The step zoom is a particularly genius idea. I have been working with primes for many years and it fits me perfectly.
Here is the gratuitous flower shot from my first few shots with the GX100. My clematis is looking particularly nice this year. Good luck and great shooting.