I got the nerve up to buy and was reading up about it, but it was too expensive. I complained about that online, to someone, and he told me that you can buy parts of one. 

I'd been following and reading about it for years, without knowing that. I guess everyone assumed only rich people would buy it. Which was mostly true. Everyone was buying quantities of Bitcoin.

People are completely incredulous, when I tell them that they can buy parts of a Bitcoin. That's still uncommon knowledge.