I expect that many elect to go it alone because they encountered someone like RCPilet in their early stages.

For my first attempt at RC (I had flown CL and FF years before) I built a Kadet. On my second flight i became disoriented and crashed while my "instructor" was bragging to some other guy about how many people he had taught.

I then built a large 3-channel polyhedral plane, either a-piece-o-cake or a Butterfly, found a place to fly alone and was soon relatively proficient. Then the transition to the rebuilt Kadet was no big trick.