Absolutely, we are hard wired to create in groups and out groups. It’s just herd mentality as part of being a mammal, so it’s a very old (on the evolutionary timeline) and deeply rooted part of being human. The sense of fulfillment really comes from feeling a part of a group that is better than another group in some way. Makes sense evolutionarily but it’s difficult to bypass in modern times when it’s no longer necessary to survive.