I'm so sick of reading about "Pro" users. I am a REALTOR® and am definitely a Professional -- or "Pro" in Apple parlance. I'm also, from a previous life, a network engineer/system administrator. I am literally the type of person who will push the heck out of a machine and find its limits. Sure, I don't do video/audio work, but, I need to work in Photoshop, use beefy CRMs, manage files and documents, and ensure that my computing world is working 100% of the time.
Apple MacBook Pro's let me keep working. From home, at the office, at a Starbucks with a client who's buying their first, second, or 20th home. If I can't write a deal and get it presented, I lose a commission. My commissions can be $15,000+. That's on one deal. I don't just do one deal a month either.... I need a computer that has 0 viruses, 0 hiccups. Windows is a piece of cr@p -- it just doesn't give me the battery life I get in the MBP, and it doesn't "just work".
Frankly, Apple could double the price -- and I'd still pay it. Few hundred in dongles? Don't care. All I care is that I can make sure that my deals get done, my marketing gets made, my text messaging/iMessages get delivered, and *EVERYTHING* is synced between all my devices.
As far as I'm concerned, the MBP is Pro enough for me. QED.