When everyone is individualized and alienated from each other, you wind up with a deep emptiness in a population looking for community and organization to fill the void. This is exactly the methodology Stalin and Hitler took to get people on board with totalitarianism. People are fundamentally social animals who need community and social structures, and making everyone into an individual creates instability and allows for sociopaths to rise to power to fill those gaps.

I suggest reading the book The Origins of Totalitarianism by Hannah Arendt.