Humans are social creatures. I'd like to first break any pre-conceived misconceptions about VipKid teachers. Teachers are not introverts with no social lives who sit in front of the computer all day. Teachers are some of the most social people you'll ever meet, quite often they are the life of the party. In fact, all the free time allows teachers to use their time socializing with whom they want, when they want.
It might be easy to think of a teacher as someone who only spends far too much time socializing with 'digital' friends, but the truth is, most good teachers are quite aware of the dangers from social isolation, and take preventive steps to avoid it.
Studies in corporate settings have long demonstrated how important other people are to our careers