Well said! I've been discussing that in length at my site recently. I disdain fanboys. I try to avoid any fanboyism myself on the things I'm passionate about. You can be passionate without being a fanboy, and some people don't realize that. So in the end, my thoughts are, "Be passionate about whatever you believe in. Just never, ever be a fanboy."

Definition: Fanboy

An individual with an unbounded passionate belief in something on which they have no proper knowledge, understanding, and/or reason for why they believe in said object, other than it's "cool", it's "the best", or some other vague reason.

I think the best way to be passionate about what you believe in, but avoid being a fanboy comes from, interestingly enough, Christian witnessing guidelines.

1. Be prepared to give an answer for what you believe in. IE, if someone asks you why you believe in it, don't give them some trite answer. Give them a good, quality, informed answer.
2. Be polite. Don't rant and rave and act like an animal. (or inversely, like an idiot)
3. Talk on the level of the individual. If you discover that you're either talking above or below them, adjust your speech so you're either on, or as close to the same level they are.

Trust me, these three simple tips work wonders when dealing with people new to Linux. Heck, I ought to know. I teach enough of them.
My experience with Ubuntu hasn't been that great. However, I've had great luck with Linux Mint, a stepchild of Ubuntu (they seem to have fixed many of the issues I had with Ubuntu), and most of the new users I've introduced to it just adore it.

But to each his own. Just because I don't like Ubuntu doesn't mean it won't work for others. The only thing I hate are the raving fanboys.

Benson: LOL. Awesome comic!