Re: It was ever thus
Don't get it wrong - isolation, some time, is good, and advantageous. It's the reason you're being isolating for, and the effects it has on you, that matters. Acquiring new knowledge may require isolation. Compulsively and passively consuming "contents" in isolation - or even worse becoming obsessed by those contents, is dangerous. Albeit it is acceptable to relax when under control.
And being in group is not always a good thing either - a group of hooligans is not exactly a good thing.