These should almost be 1 thread... anyway:
RiD caught my eye, because they were cars again. I was really excited. Plus the internet was new and awesome for me, and I could look up pictures of them!

Sadly I still didn't have much money, so while there was a spark of interest, it slowly faded again. Luckily, just long enough to miss out on Armada, because looking at it now, it was a step back from RiD.
Finally, the combination of moving out and having my own income, along with discovering this site, and the advent of 20th Anniversary Prime got me hooked. It was a golden era, it seemed, with Energon, Alternators AND Reissues all going at once. If only I'd had the money to buy them all at the time! Though I've mostly caught up now.

(Disposable income's nice, isn't it?)
I went through a few lulls, one during Cybertron when I was living with a somewhat less-supportive ex-girlfriend, another smaller one just before Classics started (started losing interest), and a period of boredom after the first movie line, but I seem to be going strong now, with no signs of wanting out.