Thanks.
Well, it's about communication. I try very hard to articulate myself in a fairly standard way in order to make sure I'm understood clearly. I try to make it seem fairly "neutral" in order to avoid giving it too much of a flavor that detracts from the message. I have no idea how many people from different countries or such will be reading it, after all. Also, I don't want to intimidate or alienate all the INTs (they are the lifeblood of these forums, really) with too much emotional expression, so I'm deliberately trying to tone it down a bit. If you communicated with me in PM or IM, and especially in person, you'd probably notice a very different style emerge.
I probably also want the things I say to be respected and paid attention to rather than dismissed as a pure emotional reaction, and I fear that NTs would likely do that if I weren't careful. There's also the consideration that I'm very sheltered and haven't had as many interactions with people as I'd like due to being homeschooled and having an Introverted parent who never pressured me to go anywhere at all growing up (still kind of anxious/self-conscious about being in public, honestly), and thus my Fe probably is fairly weak in comparison to other INFJs. On top of that, I often come to a forum rather than an individual when I'm in the mood to discuss things in a more serious manner.