And not by a little. My Mom is waaaaaay better than your Mom. It's not even a competition. Cooking, teaching, looks, advice, it doesn't matter what. If your Mom turned into a tiger and fought my Mom, my Mom would punch her in the throat and serve her for dinner. My mom can beat your mom in Mario Kart.
This will always be true. My opinion may be slightly biased, and for damn good reason. She is my mother. This type of view is completely okay and understandable when it comes to talking about family. We do it when talking about sports teams, favorite bands, high schools and pretty much anything that invites a tribe mentality.
The problem comes when we think this way all he time to validate how we feel. We use confirmation bias when searching for evidence to support it. "Look at all this evidence I found supporting my thoughts while ignoring anything that may contradict it. I have a well rounded argument!"
This is why people can't talk about politics or religion, but also the same reason they need to. We become blind to our own contradictions.
"My religion is based on free will and forgiveness, it is our place to judge people and tell them what they can and can't do."
"They don't agree with our ideas, so they don't believe in democracy. We must not work with them at all cost".
"Criminals don't follow the law anyways, so why would laws that make it more difficult to get guns stop them?"
It's difficult to reality test your assumptions when you only spend time talking to yourself and those that agree with you. Maybe you've been right this whole time, maybe not?
My moms apple pie makes your moms taste like a gym floor.