Being humans, we do not exist in isolation from the outward world that encompasses other humans, flora, and fauna, for which we need social interactions with others in our surroundings. In fact, we are called "social animals" for whom social interactions are of utmost importance for maintaining our mental fitness and staying psychologically fit, present, stable, and valued.
My neighbor is 80. She's known me since I was 13. Her husband died 10 or so years ago. She's my political opposite. All she does all day is stay inside her house (even when it's sunny) and watch TV news. I try to be nice to her because she's alone and probably depressed, but sometimes I want to curse her to high heaven. I borrowed $40 from her and told her I'd give it back the next day.