I remember back in the mid-70s, I sent in one of those ads from the backs of magazines where they'd send you a model every month (for a fee) until you cancelled. I remember the first model I received was some Lunar Landing thing...pretty cool. Then my mom got the first bill. She called them up and said something like, "He's only 12!", plus some more stuff that's not for the ears of children.
Then she turned her attention towards me...
The modeling bug bit me though, kinda. By the time I got to high school, I had a fairly large fleet of model rockets. Mostly Centuri, plus a few Estes.