Sadness, I call it gladness
As with all things, it depends on the nature and frequency of the binging.
For example, when my wife and I get a new boxset , we tend to watch 2-3 episodes at night together after the children have been dispatched to bed. I suppose that we could hire a babysitter and go down to the pub. That would be less anti-social but also less liver-friendly. There may be a correlation. We buy about 4 or so boxsets per year.
The last time we seriously binged on DVDs was all 6 Lord of the Rings DVDs over 10 or so hours back in 2006. I borrowed a projector and screen from work and we ordered Thai and pizza for our meals. At the end, I had a headache and vowed never again, well not soon, anyway.
But I see no reason why binge-watching, like binge game-playing, can't be a social activity. Organise an all-day session with friends — say, this sunday we will go through series 1 of Game Of Thrones and make an occasion of it. Then we'll organise another Sunday for series 2. Hell, it's even an excuse to go out and buy a much bigger monitor.
 We don't have a TV, just a DVD player. We are definitely anti-social people.