You misunderstand; I don't have any trouble with human interaction, including strangers. But I've heard many women describe being exhausted by getting hit on c

You misunderstand; I don't have any trouble with human interaction, including strangers. But I've heard many women describe being exhausted by getting hit on constantly, in situations where they really just don't care and just want to get their coffee, or get to work, or be out in the world for literally any other reason. If you're at a bar or on a dating app: go for it. In that context, people are actively soliciting that kind of interaction. There's an implied social contract: "we are here to flirt". You may still be rejected, but you're invited to put yourself out there. In most other contexts, jumping straight into romantic interactions out of the blue is probably going to be unwanted. Being friendly to all people is great, sure. But read the room. And, from others' anecdotes, those annoying interactions are the best case scenario. Some (a minority, but not so small it doesn't matter) men don't handle rejection well. They get persistent, or pushy, or sometimes even irate or violent. Even if it only happens one out of one hundred times, it's enough to put someone on edge when a stranger approaches them and compliments their hair. Just another reason to keep unprompted amorous interactions within the appropriate contexts.