My rule is I can’t buy a game unless I am going to play it that same day.
Even in cases where the rule causes me to miss a sale and end up buying the game later, I’m sure it still saves me money, and - more importantly - saves a tremendous amount of regret and stress caused by buying games that would just sit my library unplayed.



That’s a very considered answer, I like it.
I expect if I was asked this question back when I was 20, I’d have said “20 lol”- because why on earth would you ever want to be older than that?
But that answer completely overlooks there’s a lot of external factors to consider which are increasingly relevant as your mental age diverges from your physical age. Right or wrong, perceptions matter and people will judge you on how you look.
30 is a very good middle ground where you could participate in just about any social group you wanted without sticking out too much.