I had an assortment of Transformers when I was a kid, mainly ranging from 1984-1986 toys (I had all the 84 toys and a lot of the 1985 toys, mainly those that featured in the cartoon, same with 86.). When I turned 10 years old my father through all my toys away (TFs, Thundercats, MOTU, GI Joes, comics, etc).
The part above I wouldn't really call it collecting and since its all gone they don't count at all.
I started buying TFs as a collector in 2006 when the 10th Anniversary BW had reached local retail. I begun with Cyber Key Primal and Megatron and the ball rolled from there.