An extremely hypocritical point of view, of course, considering that you do throw your opinion around argumentatively a lot. It seems to me that this is little more than a defense mechanism.
Not really, I do it cause it's fun and I don't need to use my brain at all. Discussing with cRPG folks is very relaxing and fun activity at the same time. Pointless, but fun

Only thing that matters is when you actually do something for community. Blabbering won't get you anywhere, that's why I won't put much effort in it. If I can have a nice discussion with someone I keep doing it, if not I just ignore it.
For example, I'm fairly sure no one gives a flying fuck what either chadz or cmp think about stuff in general, but everyone respects them for what they've done and keep doing every day. That's why their word matters, not because their opinion is awesome.
You then go on to call that a human characteristic. But it is only a human characteristic in mentally ill people when you go on believing something despite contrary evidence and despite being unable to back up your 'opinion' with anything other than "well that's just what I believe."
About that "discussion" with cmp (although such thing isn't possible because of his nature), I have thrown some data collected over past year or so (from various sources, don't have links at hand for everything). Wasn't trying to back up my claims at all, just shared what I heard about SteamOS. Cmp is a busy dude and I bet he has spent less than 10 minutes on that subject. I'm following it for a long time, you can even say I researched it a bit. I have no desire to discuss with someone who put less time into something than me.