FB was a game changer early on. It was absolutely a great tool to meet single women. This was in 2004/2005. It was trendy. It was the only social network really.I'd say FB was more millennial focused, since that's who was in college when it started.
But, I agree with your point. Maybe 30+, though.
I’ll never forget when they opened up Facebook to non college people. I remember deleting so many posts/pictures once I saw my parents get an account.