You've nailed something there. Most of people's happiness comes from family/friends/significant others, and it's our most intimate relationships that have suffered due to the sexual revolution, divorce, etc. You now have no ability to count on your most significant relationship continuing even into next week. They can just up and leave at any moment and you can't do anything about it. That kind of instability at the core of life makes a satisfying life extremely difficult to find.
But enjoy your internet, 4K OLED TV and smart phone, 'cause you can have those all day long. Yeah, nothing to be depressed about theses days!