How to make friends when you're 50+?

I am here because I was addicted to P which lead to PIED.
I am also addicted to Sex, I know that now, somehow my brain misfired looking for freindship/connection as in looking for Sex. I was successful in finding Sex, but while the O was great, just like any drug it left me empty and alone afterward.

So, how do I find friends and friendship? I do have a girlfriend and we do things together, but I need more, a deeper connection. When I was 18 or so back home I had a group of friends, and with 3 or 4 we were very close, very good buddies. We are still Facebook friends, but too many miles in between and too many years our connection is not that deep.

I am an introvert, which doesn't help. I don't care much about small talk or watching/talking sports; I do enjoy manly activities like fixing stuff around the house, working with power tools like a chainsaw or going deep sea fishing.

I am divorced with no kids, and I live in suburbia where everyone is married. Most of my friends are married where the husband is metrosexual or pussy whipped; and the wife is the typical bored housewife, either centered about shopping and other materialistic things or having an affair (yes I am guilty of a few of those).

I live near a major city where I go often, I do sign up for meetups for things that I am interested in, but I find that the people at these meetups are there either to show off their knowledge of the matter, no matter how little they know, or to find a husband (in the case of the women who are 99% single) or to find a girlfriend (in the case of the guys there).

I do volunteer in a couple of organizations, I know a lot of people there, but they are more acquaintances than friends.

I am in Facebook with 500+ friends, but we all know that those are not really friends.

In the past whenever I found someone that I clicked with, it was always a female and always led to sex, probably because I am addicted to Sex, I was looking for Sex, and I was giving away those vibes, and I was sensitive to those vibes as well.

So, back to the original question: how does one go about making friends? Not for sex, not for relationship, but for the sake of Friendship.

Anyone?