Same! You're definitely not alone, even if I do feel like a rare species these days. I really wish we were all going in two or three days a week. This constant wfh is driving me crazy.
People will tell you only lonely people think that way, but I think office socialization is a different kind of thing. At the office you meet and chat with people of all ages and different types. When you're with friends, you're probably hanging with a bunch of people more like yourself.