I recently read the article on finding friends over 30 (https://news.ycombinator.com/item?id=17008944) and thought HN was as great a place as any to form social connections offline.
If you want to get together, post your city and what you'd be up for, or respond to one from someone else.
Lets grab some coffee, talk technology and design, build a project, make some art, see a show, do a hike, play some MTG.