I honestly don't remember what year it was - the late 80's comes to mind.
Just graduated college (university to you guys), got my first real job making pretty good money. Sister, nephew and I went out for my birthday, and we stopped by toys-r-us on the way home. Nephew was interested in tg-16 (he had an nes already). I was gonna buy some games for us to play, but my sister said he would only lose/trade them away. Since I wanted something I could play, I bought the tg-16. All of it. CD attachment too, and all the games toys-r-us had in stock.
When the turbo express came out, I had to have that too, so I could play my games on the road. Spent many, many hours (and loads of batteries) in airplanes trying to beat blazing lazers and alien crush. Then devil's crush, when it came out.
And fwiw, it became household policy that if you wanted a video game system, you couldn't buy one we already had.. So we ended up with pretty much all the major ones since then. Genesis+cd (niece), SNES, n64, Dreamcast, XBox, XBox360 (nephew), and wii (niece).
I pretty much stuck to the retro stuff; I still have my first 2600, but I had to replace my coleco. Nephew picked up an intellevision from someone. I don't collect this stuff; there's only a few games I play on each system, but the games I play i really enjoy.