The serious thing: When taxes, interest rates and mortgages were no longer abstract concepts but things I dealt with on a regular basis (I have spreadsheets!)
The funny thing: When I realized I could spend >500$ on a telescope without having to ask, wait, bargain or argue with anybody about it. I want it, I buy it.
I like mine (duh) but also switch it up on different platforms. I’m much more averse to being recognized on the internet now.