The idea of being a provider as a man is deeply ingrained in our society and is the most likely reason. You grow up being told that you’re the man of the family and that you need to provide because it’s the thing you do.
Alternatively, they wanted to leave a good impression with you of being a generous, dependable guy. Someone you’d want to hang out with more if you saw them as someone who has money for activities.
Likely it’s a mix of both








One can wish