You don't have to work 8 hours non-stop. You can leave, meet friends (i.e. people you actually want to spend time with, not do because you have no one else) at lunch, talk to family, talk to neighbors, go to the gym, walk the dog, go for a swim (if you happen to live by the water) and still interact with people. But that implies you actually do have a social circle outside of your workplace or social abilities. If you don't have those, I doubt your workplace will provide any meaningful, organic interaction opportunities, either.