I'd also add the more "regular", the more likely you are to find regular people. The stereotypical events & hobbies recommended for meeting people can unsurprisingly wind up chock-full of outcast-sorts who are also looking to meet people. If you want to find a real group, and a variety of ordinary folks, you want to expressly avoid all the sort of things Lonely Joe Developer would try.
(Nothing wrong with loner types, but a concentrated bunch of loners is not a great foundation for building a strong social group)