My Dad got me into this when I was 4, he did the same with my nephew. I probably built something from Guillows by age 8, more planes and rockets followed, soloed r/c at age 11, built my first u/c at age 13, first r/c a Smoothie, at 15. Still going at it at age 55. Dad is still at it at age 83 and nephew Kyle has 20 years of experience at age 24. He hasn't done a kit yet but can get a 50cc arf together with no problem.
Rick H.