This is what the last sentence in my post was about; I shouldn’t have to include it. Please try to refrain from doing it in future as it perpetuates the toxicity that Reddit had (and still has) a reputation for. Its fine to pass over a post if you don’t know the answer. It is also fine to pass over a post if you would never find an answer useful.
That being said, since COVID lockdowns were lifted, a hell of a lot of places have become card only, making it necessary to carry one. Some people may have the privileges to be able to use cash whenever they want, but not everyone can. There are places where disability benefits disallow you from taking out the money you receive as cash; I think this is some sort of war on drugs thing. Another reason is that women’s clothing is quite infamously lacking pockets.