Disclaimer: I'm long time GNOME user and contributor.
I have written about the reason I won't use (and dislike) KDE several times:
- 2005: Something I don't like about KDE (in Thai)
- 2007: Why I Hate KDE (English with pic)
- 2008: KDE 4.0 and Back Again (in Thai)
Today is a good chance to write about it again!