I try to engage in an exchange of ideas and opinions in debate in a civil manner. But when the name calling, obfuscation, and putting words in the mouths of others begins it's time to cut communication.
It isn't my intent to change anyone's mind but I do hope to offer them an opportunity to change their methodology in relation to sharing and comparing views with others.
Of course, I understand that people with weak foundations to their beliefs, and those that are merely "parrots", think that if they can change even one person's mind they must be in the right.
People seem to forget that freedom is doing, thinking, and saying what is right for you without fear of reprisal AND respecting every other person's doing, thinking, and saying what is right for them.