The reason is not what you may think.
When you learn to debate you need to research both sides, and in some forms be ready to debate in favor of either side of an issue based on the results of a coin toss.
Having to research and present a view differing from your own opens the doors to realizing that there is an element of truth in every point of view, that no matter how strong you feel emotionally, you need to acknowledge and understand the other side in order to have a prayer of winning your case against it, or better yet, to finding a common ground for acceptable ad positive compromise.
Perhaps the members of Congress have forgotten how to really debate. Maybe the television influenced world of soundbites, short slogans and presenting half truths as truth to generate ratings, has taken over our government.
What are your views?
Are you willing to compromise?
Do you really listen to the other side, even when you "know" they are wrong?
Do you research below the surface, being fair and balanced in the process, to really understand the issues or beliefs you stick up for, live by or represent to others?