From personal experience, this doesn't work.
Someone suggested this on another thread to someone who was complaining that he's lonely.
I have a variety of interests and have occasionally been to meet-ups and the like...but just because someone else likes '60s pop music' or 'Looking For Mr Goodbar' does not mean we're cut out to be friends. No, siree...not AT ALL.
A thread on DL about these subjects is fine. The thread dies a natural death and we all move on.
Have you ever joined a group or been to a meet-up with people who 'share your interests'? How did you get along?