I was told that it wasn't always this bad in the US either. A few decades ago, people were warmer and they socialized more. It looks like in the past few decade

I was told that it wasn't always this bad in the US either. A few decades ago, people were warmer and they socialized more. It looks like in the past few decades, social alienation and fear have set into the American society and started making people ever more distant from each other. Likely because of the stress and angst caused by economic insecurity, consumerism, the ensuing social and political conflicts etc etc.