cooltwo65 - Every FWB was once a stranger. For us, the difference between most strangers and FWBs is simply time. The vast majority of the people we play with are not one and done. Yes, we do play a lot, but that's because we have a lot of LS friends of all ages.
We certainly are nothing special and merely very fortunate to have the parties we have so close to us. A large portion of the crowd at these parties are 50 and up. They come to talk/socialize, and if things go that way, play. There are times where we meet and talk with people multiple times before we ever make it into a bedroom, if at all. There are also times where we just want to play, so we do. Many times any new (to us) people become FWBs.
As for not wanting to travel, I do get that too, but again, we're blessed with a lot of opportunity within 30 mins of our house, and even occasionally have parties at our home, but these are all LS friends of ours.
We tend to not do clubs, or parties with mostly younger crowds, for the same reason you mentioned. Many of the younger crowd are there to party only (i.e. get drunk/stoned, dance). If they do play at all, they tend to do so only with their partner. Clubs don't care because their money is as green as everyone elses.
FWIW - I agree with Onehorneywife. If what you're doing now isn't working for you, you need to change it up somehow.