Joseph,
It occurs to me, reading many of your posts, that you are a smart guy who, like many smart guys, did really well as a kid just by thinking about things, having ideas, and forming opinions based solely on thinking about stuff. Being smart and good at thinking can earn a lot of praise and respect, and is intellectually rewarding in itself. The problem is, once you're not a kid anymore, the conclusions you come to just through thinking about stuff is no longer enough, especially if you are dealing with other smart thinky people who have also learned disciplined background research and data collection. In that sort of circumstance, if you charge into a topic armed with nothing but thinking, you will look like kind of a fool, because the others are armed with thinking, AND with background research and data.
My advice to you is to leverage your thinking skills by augmenting them with background research, so that your thinking and conclusions are meaningful within the context of the topic at hand. If you start to feel an opinion coming on, before you sit down and write three lengthy paragraphs expounding on what you think about your topic, sit down and research the background and context around your topic. That way, you will avoid aging into an unfortunate blowhard.