Raised in a divided household and many times saw 'families' in the congregations get invited to things that we weren't, because #A it was uncomfortable inviting my father to things since he wasn't a witness and he had a drinking problem or #B because they were doing couple things and they wanted 'witness couple things' so they left mom out a lot.
This is how it was for my mum, my father was an alcoholic, so rather than encouraging her and including her in social occasions she was isolated by the congregation 'cause their all-encompassing Christian agape love couldn't reach far enough to include my father. In spite of the alcoholism, my father was very meek and would converse with the JWs about the Bible almost as if he were one himself. They still pretty much ignored my parents.
As for me, I'm still single and loving it and never experienced any isolation as a result of being a single sister in the congregation. Where I live there are many, many single sisters and we'd always be doing stuff. We'd include sisters who lived in divided households as well as other married sisters 'cause they'd complain about never being able to get out of the house and wanted to have a evening out with the gals. We'd go to the movies, jazz festivals, restaurants, concerts, etc.
It all depends on the area. When I was in the Spanish congregation I got a lot of "why aren't you married", but they gave up trying to figure out this strange "gringa" after awhile and left me alone. I think they wished they could do the traveling and stuff I was doing, rather than waiting on their dear hubbies hand and foot day in day out.