I have been in the hobby 3 times:
1979 - High School. Too much money and not enough expert advice left me grounded.
1986 - Out of college, with a job and no responsibilities. Flew actively till '91 when I met my wife and became interested in her tailfeathers.
2009 - My teenage son found my old Telemaster in the attic. "Dad can we fly that?" I've never seen a kid with so many airplanes...