The thing is that you can still build kits if you want to. The ARFs only add another option to the hobby that alot of guys like. True, it does increase the number of people in the hobby who don't really understand construction and airframe design, but how does that matter to the rest of us? As long as they fly safely and stay active, then I'm happy with them. Most of the guys in my club fly ARFs because they want to spend their hobby time flying instead of building. Most are good flyers too and rarely have wrecks.