Do your assumptions prevent you from considering the position of others?

Specifically, do you assume that a person is homophobic or intolerant just because they don’t accept gay marriage? Do you assume a person is anti pro choice just because they are pro life and disagree with abortion? Do you assume a person is a Creationist just because they are a Theist?

Likewise, do you assume a person is bad and doomed to burn in Hell just because they are Atheist, Homosexual, or that they believe in Darwinian evolution?

Do our assumptions prevent us from fully considering another persons world view, or perhaps from finding a common ground in the middle?