Basically if you have any kind of publicly available contact information/presence, and you have friends that really care enough to want to reach out to you for a meaningful, enriching interaction, they can figure out how to reach out to you.
This facebook culture of needing this centralized service to dictate whether or not you exist as an individual is complete bullshit and I reject it outright. The idea that we're trading away true autonomy for the "ease of social interaction via the web" when most facebook interaction actually is people looking at the endless feed of nonsense/memes/political garbage on the news feed, and not any kind of meaningful 1-on-1 messaging, is the ultimate farce.
Furthermore, whats even worse about the facebook normalization thats occurring, is this idea that, "oh, you don't have $(OUR_OFFERING)? What's wrong with you? How can I possibly reach out to you?"
What do people really get out of facebook? I'd be willing to wager that there is no value creation occurrring. Either you're wealthy enough that they'll figure out how to hook up your anonymized profile info in such a way that you will get sold useless nonsense, or you're poor enough that they will try to dominate what your impression is of the "broader Web experience"
Why are we all paying $(MAX_INT) dollars a month on a cell phone subscription if we're all supposedly intimately connected via Internet platforms? Meanwhile, people feel more depressed than they've ever felt before, and socialization is declining across all quantifiable dimensions. So either I'm missing something, or its just a huge joke at everyone's expense.
I finally got around to deleting my facebook recently and while, as with all addictions, has been challenging, I feel myself slowly taking my life back from the social media theatre that has taken over human life over the last decade, give or take a few years.