What would some people say... "as old as dirt"

Just kidding....
My "beginnings" were some odd machines that i never knew the names of. (my dad brought them home from work) - i just remember they had these casette tape "drives" which made really melodic sounds when loading a program. LOL
Then the mentioned 286 AT - wow we were all fascinated watching it draw fractals - and it only took about 1 minute to fill the screen. That was just soooo fast.
After that things are a bit fuzzy cause my dad had his own computer business so there was always a new machine - components got swapped and all i really cared about was gaming and then the web....
It gets a little clearer again after my beloved AMD K6/2 450 machine w/ Riva TNT2 3D card. Oh how i loved that one....
I also used every OS in your list. Never got around to try linux yet even though i know i should....