I promise you aren't in a simu......simu......simu...lation. Couldn't help myself there. XD
We are all similar in ways and maybe that's what you're noticing?
People essentially want to be loved and happy. We behave similar ways to try to attain those two goals. Our society is so messed up though that we all do the same things that never work. Those stick out much more than the true efforts for the two things.
I probably make no sense here.