The iMac is really cool, sleek, pretty, minimal, yeah... but many pros I know already have monitors they like. How about a little love for their other desktops (mini and Pro)! I'd also wager that most "pros" aren't, in general, people with white offices and squeaky clean desks on which art-like computers sit.
And keep your confounded sticky fingers off my screen!
Otherwise, yeah, a long-time Mac user drifting away from the fold. Then again, there aren't many systems left that aren't larded with proprietary sh** that fubars something in Linux. And Windows is not to be abided.