Have you ever felt like your old friends just drifted away despite your best efforts to stay in touch?

I joined Reddit recently mostly just to vent about my loneliness and feelings of being a social pariah. I moved away from my home city about 11 years ago because I was in my late 20s and had no social life and a dead end, low-paying job. I've been in Minnesota since early 2014 and haven't made any close friends (though I did meet my wife here). Every old work buddy and high school friend I had back in Missouri stopped teaching out after I moved. With Facebook and Instagram it's easy to feel like people are still in your life despite never seeing them or having substantive interactions. I drove back to St Louis for an impromptu visit about nine months back and only reconnected with two old friends. One offered to put me up on his couch for a few days but didn't want to hang out with me other than catching up at his house in the evenings. The other met me for dinner and a few drinks the night I got into town but nothing more than that. I ended up driving back home after three days feeling very depressed and melancholic. I spent most of my time there alone, visiting old haunts, hiking at a nature center I used to hike at when I lived in town, and generally feeling like no one had cared that I'd moved away or wanted to catch up during my visit back.

It's been the better part of a year since my visit and I'm wondering if I should even bother going back again. I'm grateful to have an amazing wife and a decent professional life here in MN but I miss my home state sometimes. Then I just get sad because I know there's nobody there who gives a shit that I left or made something of myself elsewhere. I've tried staying in touch with the two guys I saw during my last visit and I either get no response or a half-hearted reply text several days later. Am I a naive fool for even considering them friends? Should I just move on and accept that they're no longer a part of my life?