When I was a CS student in the early-mid 90s, my college had Unix only and we had to fight to get a free terminal to complete our assignments.I had a good 486DX with Windows 3.11 and I had heard of Minix, so I could do my assignments in the comfort (?) of my dorm room.
I went to my local technical library to see if they had a box (that sort of places used to carry boxed OSes and specialized software back then). They didn’t, but they had this CD with Slackware written on it and the store owner said it was better. So I bought it on a whim.
After many hours and a lot of recompiling the kernel and libraries right and left, the thing finally booted and ran surprisingly stable. My roommate saw it and immediately installed it on his machine. The next days we went buy a couple of 10base2 NICs, some coax and a pair of terminator, and before you know it, we had NFS going.
It was our own Unix network and it was way better than college’s :) I never looked back.
I did work with DRDOS as a kernel dev a few years later, which involved reverse-engineering bits of MSDOS 7 (yes, that’s the version of MSDOS Windows 95 ran on top of). That’s as close to working professionally with MS stuff as I ever got. Other than than, I’m a pure product of the Linux generation baby!