I guess it's my turn to chime in.
There is nothing wrong with flying AFR's if that's is all you have time or desire for.
I got into the hobby for one reason, it wasn't to learn to fly. it wasn't to learn to build and it was to make friends. These were all bonuses. I got into the hobby for stress management. I worked a pretty high stress job in the military and I would come home ready to pull my hair out, have some dinner and watch some TV. I would go to bed and once I lied down I would spend the next hour or so in bed planning out my day to come.
I had mentioned to my wife that I had an enterest in RC and few weeks later my wife handed me a large wrapped box for my birthday. It was a telemaster 40 Kit.
Well, I found that is was impossible for me to think about work while I was building the plane. I'd spend an hour or two out in my shop building. I joined a club learned to fly and made alot of new friends. Now I spend a hour in bed thinking about planes
Soon as the Telemaster was built and flying and I was in training I started a second plane, A Sig Kouger, I still love to build, I usually have one building and one covering or painting. That way I can work on which ever one I feel like. I have to be in the right mood for covering.
Anyway, there nothing wrong with arf's but your missing out on a great part of the hobby if you don't have a project on a back burner and the satisfaction of fly something that you built is hard to express.