Argument is a great way of forming relationships. The problem in modern times is that one person, typically the person such as yourself - endlessly confident in their flawless knowledge and determined to impose it on everybody, becomes belligerent when somebody doesn't simply graciously accept their impeccably perfect argument. That doesn't typically lead to good outcomes.

More generally, I think people have forgotten that two people - no less intelligent than the other - can see the exact same thing, evidence, or whatever else, and simply come to different conclusions.