I started picking up Marvel UK reprints and original copies of Uncanny in 1980. I suspect I was on the hunt for Captain Britain stories (might be wrong, that might have been a bit later?).
First issue I read was about 101 or 102, I think.
It was hellishly hard to find them, I had to frequent some pretty dodgy shops and some of the copies were pretty tatty (in a choice between a £3 copy or a better condition £5 copy, I went for the cheap one every time). A couple I never tracked down (the first Alpha Flight issue I think) until Marvel started Classic X Men reprints.
So, yes, you young whippersnappers have it easy. And Marvel Unlimited is fab.