Awright, another new thread!

to OhhJim!
I'm lucky in that I started going to my church when most of us singles were still in the "younger" category -- and we've grown older together. Sure, many have gotten married, but there are still a good dozen or more of us who haven't.
If that *weren't* the case, though, I'd do one of two things: Either start going to another church, preferably a big one with a large "mature singles" ministry; or stay at my church but go to another church's "mature singles" fellowship.
There are other options, but they'd take energy.
I mean, with the idea of gathering multiple churches' older singles together, one could ask the pastors to put you in touch with other pastors in your denomination (or outside it), who could put you in touch with the older singles at their churches. Together, you could host a barbeque or potluck, and hopefully that would lead to other events.
Or, to integrate with the families in one's church, you could express interest to a pastor or elder in spending time with a few families. (My church has tried something like that.) Or there's always the idea of spending time with your own gender -- men's or women's ministry.
I agree it's tough to be an older single. I didn't read the thread in the main forum, so I don't know all the reasons given for churches not being accepting. But when I was younger I had to switch churches because there were so few 20-something singles at my church. It's not like the church didn't care; they just didn't have much power to attract young single people. So I have no problem with the notion of switching churches in order to have more fellowship.