How I got into it was tiredness of centralised platforms that dictate how we use those platforms. Often archival, search functions are non-trivial in things like Whatsapp, Discord etc. We made our own mesh application based on wifi and batman but ofc we couldnt convince our friends and family to switch over.
The ubiquity (network effect) and ‘convenience’ of other apps. This was more than a decade ago and our devices were an extra thing you needed to carry (travel router).