I met my wife in a support group, although there were some other group members that kind of helped us get together. Once we started dating we found out that my father was her mother's boss for a while when they both worked for the Department of Defense.
We have been married for 15 years, have a daughter, and probably in general have a marriage with less conflict and arguments than most. Most of our conflict occurs between us and our daughter, not with each other.
You never know where you might meet someone! If something happened and I ended up single again and wanted to get a girlfriend again I would probably do better in on-line sites. I am more of an acquired taste. Females aren't immediately attracted to me for some reason. The on-line format might let them learn something about me before we met in person and whatever weirdness I have became visible.