Well I knew about it when I was 20 (2010), when it just came out. So no one told me: I'm a nerd yo, I got minecraft when it was still in alpha ;)

I found it fascinating technologically, but didn't understand it fully. The whitepaper was easy to recognize as being revolutionary (papers that aren't always try to "sound smart" instead of explanatory) but I didn't know enough and kind of disliked money (i was a leftist noam chomsky style anarchist back then).

I remember trying to buy some, but it was mildly complicated to do and I was too lazy, and didn't care that much anyway. Whoops! Hahahah.