As someone who is often pretty introverted, I feel like wireless earbuds just give me a way to act like I already wanted to with less friction. I pretty rarely want to talk to random strangers, not because I have anything against them, but because I just find it takes a lot of energy for me to do so (probably not in small part from having to replicate a lot of what comes naturally from others in terms of social signal reading with extra effort). People seem to be a lot less likely to randomly initiate conversations with me when I'm out in public with my earbuds on, and that saves me from having to decide between feeling even more tired after going out or the awkwardness of trying to cut off the conversation short to avoid spending energy on it.