People who do a lot of driving, tend to favor a somewhat nicer car than most. I spend upwards to 12 hours a day on my laptop, and I have no complaints making the switch to Mac 3 years ago ...
I have a 13.3" MacBook Pro 7.1 (mid 2010) that I have installed 16GB of RAM and a OWC Mercury Xtreme 480GB SSD drive. I have custom tuned this rig to handle whatever I throw at it. I use CAD programs, Photoshop w/large images, movie rendering, and music production without any hiccups at all.
I was a Windows loyalist for years, and I was one of those Apple/Mac bashers, but after using a Mac as my main production machine (I have Win7, Win8, and Linux desktops as well that all serve different purposes), I do prefer working on my MacBook Pro.
For me personally, my productivity went up tons when I switched to Mac. When you know how to utilize the Mac "ecosystem" of software and apps, the ability to move your current project from program to program to program, is a real game changer for me.
But at the end of the day its a matter of personal preference. If you are happy with your Windows machine, that's cool. If you want a Mac, that's cool too!
