I'm glad to see that I am among "friends" in the "not too many" camp. I have 3 people that I could call if I needed to bury a body...and they are all from my high school days. Now that DW and I have moved away from ATL, I am already experiencing reduced communications with them, but that is expected. They are all still w*rking, so I am sure keeping in touch with the guy that moved 1000 miles away isn't too high on the "to do" list.
Other than that, just a mess load of former AF buds that I see once in a blue moon if the circumstances are right. As a matter of fact, I live within 20 miles of 3 of these former flyboy buddies but in the almost year of living here, I have yet to reach out to get together. For the most part, it's me...the DW...and SIL/BIL that live a few miles down the road, and really...I am OK with that.
I can also relate to some to some of the posters whose parents were best friends. For several years, I spent a lot of time w/ my Dad and a few of his drinking buddies. It started as a dog walking club of sorts, but eventually got to be a weekly get together for drinks and good times. Sadly, they have all passed on...and I miss this a lot.