Dabate skill is needed

In Japan it is said that students are not good at debating or supporting result. It may be because they have no chance to enjoy debating. Alternatively they are recommended to have their own idea or opinion. What happens if they have their own idea or opinion without any debating? The result is that they have only conclusion without any proper and plenty of reason. It makes their situation difficult after graduation. In real society people are needed to have reasoning. In this process, people who have only conclusion(without any reason) face the difficulty to live under the changing circumstances.