This is kind of the inverse of the topic...
An older, likely on the spectrum, man used to frequent the same watering hole as I did. We got along fine, but I don't drink much, and he seemed to enjoy getting drunk on cheap domestic beer all day. He was a cornerstone at the bar. He was there every single time I visited, or he had just left. Sporadically over several years I saw his clothes deteriorate, his beard grew ragged, and eventually, after retiring in 2018 or 19, he started to stink.
I asked another regular what his deal was, and apparent he did financial work for a big hospital for 30ish years and saved Every. Single. Dime. He rented a cheap house in the hood for the last 20 years, drank cheap beer, didn't have internet or cable, and as he got older, he stopped buying amenities like new clothes. Between his 401k, personal investments, and savings, it was believed he had between 1 to 3 million dollars.
Later I came to find that during covid, he found out he could get beer delivered to his door, and proceed to drink himself to death in about a year. Supposedly, he left everything to his brother... Damn shame too. He wasn't a fool or a bad guy, he just took joy in alcohol and watching the numbers go up.