There are some truths that do unite us.
We all need to eat, we all need to clean, we all need to have some form of love and caring, we all have a need for friendship. This is all in varying degrees of course. We all have strengths, and weaknesses. We all have life challenges. We all need money to live.
I think that we all need something to focus on. Depending on the person depends on what the focus is on. Some they live their lives looking after family (or at least for a time), or working, or collecting money and power ect. All people are seeking something. They either seek to watch tv, or seek to relax, or seek religion/knowledge, seek a relationship.
What do you guys think?
I think the various theories of evolutionary psychology and Jung's ideas on the collective unconscious would agree with you.