Arfs vs Kits
I build from plans for the same reason as Poncaflyer. I have been building models since 1949 and R/C since '53 and have built only one ARF.
I have design and but four planes all of which flew very well, another reason for building is that you are able to repair most any crash (one of the best flying planes I had I sold it) was picked out of the trash and rebuilt without the plans).
I agree that ARFs have brought a lot of fliers into the hobby and that is a good thing.