Why do people become amateur radio operators? To Communicate. Mail, telephones, FAXes, email, and text messages all have their purpose, but all generally share the same limitation: they require that you know who you want to communicate with, and that you know how to reach them. By contrast, ham radio and most other two-way radio systems (CB, FRS/GMRD, MURS, etc) let you communicate with people you've never met (as well as those you know). For the most part, those people will be in the same general geographic area as yourself (or, through the use of Internet-connected technology, in geographic areas you can tune in to), with the exception of the HF bands, which allow point-to-point communication with other hams worldwide.
I'm always excited when I hear about a new communication method, even more so when I hear that it's one that's open source and/or not overly regulated, mainly because I firmly believe that there will come a time when "the" government, in order to keep its citizens in line, will pull the plug on the Internet and cellular systems as we've seen done in other countries.
Without further ado I'm going to post a link here that I've just discovered, and let you decide whether it has any use or value to you. It's called the Reticulum network, and it's unironically located at https://reticulum.network/