Hands down, seeing people face to face. I have really discovered how much it means to me. I have been ambivalent about it because of social anxiety and low self esteem, but I have realized that in reality nothing else comes close in terms of raising my mood and giving me good feelings.
I've worked from home for nearly 6 years now, and since coming to the same realisation as you, my general happiness has grown substantially. It's as Marcus Aurelius says often, we are fundamentally social animals.
"If any action of yours, then, does not have direct or indirect relation to the social end, it pulls your life apart and destroys its unity."
