Many people get heated when confronted by others with an opposing view. Instead of becoming defensive, embrace this difference, recognize it as a fundamental aspect of your genuine understanding. If there was no polar opposite to your opinion, then would your opinion really exist? This world, this universe, is governed by a variety of rules, one of which is the necessity of polarities. Every positive requires a negative, every satisfaction a suffering.
When you fail to see the opposite view, you sit in stagnation, and inevitably fall into decay of mind, body, and spirit.