Uncanny. All of that is really close to my experience (I like to think I'm not bitter and miserable but I suspect you're not either - just introverted or on the spectrum).
If I’m not important enough to my friends and family for them to install a easy to set up app, then I guess I never was that important to them.
This is the standard argument and it's powerful. Problem is, it can easily be turned around: "if I'm not important enough for them to install this completely ubiquitous app that everybody is already using, then obviously they don't care much about me". Conundrum! The only way to "win" here is by playing the ethics card. But alas that argument is just not well understood by most people.