Too many people in the modern world have lost the ability to enjoy civil conversations with people who think differently than them. An increasing tendency is to create mutually exclusive environments where all others become enemies. When we build barriers that keep differently-minded people away from us, we close ourselves off from diversity of thought and ideas. Such behavior, in turn, causes us to miss or neglect new business and life opportunities because we didn't think of them.
Yes, there are times that some people will say or do things that enrage us. Yes, it can be painful to sometimes discover that we are wrong. Yes, everyone naturally wants to win a derbate, but sometimes, we’re actually made better by losing some debates here and there. Make a conscious decision not to be one of those people who blocks or avoids all people who disagree with you. Seek to understand why people think what they think, and seek to determine if they are willing to have a civil discourse. You cannot change the fool who listens to no voice but their own, but you can find many who understand that two ears are indeed more valuable than one mouth.