So, as an Apple fan, and user, I often get asked why I prefer Mac computers. This brings up the good old debate 'Mac VS PC.'
So as an Apple fan, I obviously prefer Macs, but unlike some, this does not mean that I do not support the Windows platform, in fact, I still really enjoy using Windows PC's.
In my opinion, I like using my Mac for photo and video editing, with its high resolution display and great performance. But no matter how much I would like it to, Macs have a severe lack of Video games.
This brings me to my liking for Windows computers, They have lots of games. Also, in terms of an actual PC case, it can be far more fun to build a PC from the ground up, and in some cases more affordable than a Mac.
Notice how I say in 'some cases' a PC could be cheaper. Despite the price of an Apple computer costing more from the start, I see the price as reasonable for what you are getting. I know people who compare a Mac and PC entirely based on the parts. They say they can build a high end gaming rig for less than a Mac, but the thing that that PC will always lack is Mac OSX. I know that there are Hackintosh computers out there, but the thing is they are illegal, no matter what anyone says, using the Mac operating system on a device not made by Apple is breaking the terms of use. Also, in the case of an iMac, for a computer of similar specs + the Apple cinema display (because no mater what anyone says, a 1920X1080 screen can't compare with a 2560X1440 especially at 27 inches) the price is incredibly similar.
Also, when you buy an Apple product, you are buying a quality, and a product that just looks amazing. Also in the case of a Mac computer, you can boot Windows anyway! Legally!
In the end though the decision is up to you. You can have a Mac, or a PC, or a Mac with Windows dual booted on it, or in my ideal case both a Mac and a PC :D