[softwaredoug]

I think agreement / disagreement is not rooted in rationality, but rather whether we like the other person. Whether we identify with them or not.

The most obvious example here is politics, where people jump through all kinds of irrational hoops to justify their position. Or in sports, where the referee is always biased against our team!

So maybe one thing to do is just try to build a better relationship with the person you "disagree" with. You may just feel motivated to support them not because you rationally agree, just maybe because you want to help a friend / someone you like.