gregtran
Emotion is a very powerful signal during discussion. It's a counterpoint to logic; they work together. Rarely does logic by itself win anyone over. Trying to remove "unneeded" (who decides what an unneeded emotion is) emotion is folly. We're not Vulcans.
That kind of bland vocabulary makes one's statements sound like limp static. Corporate dialect is contrived to remove strong (corporate-environment-inappropriate) emotion from your speech. If you're well acquainted with your colleagues, then I'd hope you could express yourself more genuinely. You're probably more relatable than a peppy talking head who never offends anyone.
But regular jerks abound at work because they at least don't make you feel stupid and insulted.
And you hit the nail on the head with your experiences. In high school I was neck-and-neck academically with a brilliant jerk. He went to Harvard, is now a millionaire (without inheriting it) and a much nicer person. Competing with him was one of the most formative periods of my life. He made me better, because I learned not to take harsh criticism and hectoring so seriously. Look at what they do (for you), not what they say (to you).
I actually wish there were a brilliant jerk like him in my workplace. But there are just regular jerks.