I got the Eagle Lander set back in 1970 whatever it was, Classic Space and Technic from the late 70's into the '80s.
I did a window display in town, on Main Street no less, for a local toy store. I've got the Polaroid somewhere.
Tried building Transformers when that show came out. Not much luck with basic pin hinges, but it was fun.
Got into the pirate ships in college and dental school. Got the Technic Space Shuttle and other sets during my residency in NY for weekends on call.
Then got into Star Wars when those came out. Got the Star Destroyer with an early-order deal, took me a week to finally put it together.
Became obsessed with BSG, built a Viper and Raptor, then started on the Galactica in '08-ish. Ordered a Death Star II on Ebay specifically for the project. Didn't even build it! During my research, I discovered Bricklink, then MocPages.