Loneliness today is frequently a consequence of overstimulation and total withdrawal from our local environments, so even when we stop there's no social infrastructure to find comfort in.

Busyness 'yesterday' would be in such a state of stimulation you would have no time to involve yourself in your local environment as you usually do.

Basically, we've inverted our social time to be default overstim & withdrawn instead of default understim and present.