This is so true. It has happened to me, too.
Because of my ME/CFS (and other factors as to the college), I have no college class with which I truly belong (even though, by God's grace and with a lot of help and support from faculty, administration, other students, and my family, I eventually finished college during a partial remission--of course bringing on a deep relapse), no church family, no community, etc. And yes, no one would recognize the world or the America we experience.
I have a few sweet friends who make a point of keeping in touch, even though it means they take the initiative to dial the phone almost always.