I didn't mean for this to turn into a whole story, but it kind of did. Sorry...just got to thinking about the question and out it came.
My Grandfather (mother's father), still alive at 84, loved planes as a kid. He built RC's in Muncie, IN from scraps as they were pretty poor, and kept at it as much as he could through his teenage years. Got drafted, and lucky he couldn't be a soldier because of flat feet, got into the Air Force and flew. Mostly South America for 6-8 years with some pretty cool experiences.
Got out of the service and went right into flying by getting his full ticket. Single, multi, CFI, commercial, tw, etc, but didn't want to go to the airlines. Made money by instructing, building airplanes, selling plans he came up with, trading airplanes for dealers on the airport, and doing aerobatics at shows. One of the old EAA logos was taken from a blurry photo of him at an airshow. I have an old Citabria ad that they also used his plane in, N number plain as day. But tried as he could, he just couldn't make a lot of money in aviation.
Got into the pattern and mold trade using his experience in building airplanes, moved to Elkhart, IN, and stuck with that. Sometime in the 60's built a house outside of South Bend, IN across the street from an airport in a cornfield where Lake Aviation was based, the makers of Lake Amphibian. He designed, built, and molded the yoke for the Lake Amphibian, and kept with them for a while.
Kept on building, flying, tinkering, and working. In the 90's he gave up his ticket because he couldn't stand the thought that in his older age, he could possibly have some kind of a spell and cause someone harm if he was at the controls. But he still spent a lot of time at the EAA, at the airport, and kept at writing out plans. But the only way he could then fly really was with his RC's, so he went back to them, using the experience he gained in full scale.
Built a LOT of RC's. Made up plans and designs if he couldn't find what he wanted. Tried to buy some ARF's, but laughed at how crappy they were, so he threw them out and started from scratch. The model airplane museum called and asked him to make a replica of some old, old model from a company in the 30's that went out of business, so he did it from photos and memory from scratch, and presented it to them at their museum/hall of fame. Won awards for his RC Great Lakes, Christen Eagles, and lots of others.
84 now and still building RC's in the basement. Rubber band, electric, .049, 1/4 scale radials, twins, retractable gear...whatever he dreams up. I have a lot of photos (as a boy in the 40's with some RC's, his first Citabria in the 50's, some RC's you couldn't imagine were scratch built) if anyone is interested in seeing them.
My Uncle's followed a very, very similar path and is still at it.
My father was an aircraft mechanic in the Navy, and although he never flew, talked about the systems sometimes. He didn't continue down that path when he left the service, but chose explosives instead.
I got bit by the bug at a very, very young age. I have photos of me next to a 1/4 scale Christen Eagle when I was 4 years old. I have heard and been involved in the numerous aviation discussions since I was a kid. But I was the first in the family after my Grandfather to graduate high school, go to college, get a corporate job, and get the family in order. I fought the love for aviation knowing that although it was a great love, responsibilities needed to come first so that I could enjoy it in a different way. I would have to make sacrifices, but perhaps they would not be as great as the ones others had to make.
Sorry, hope this isn't a hijack. It just kind of "happened".