I used PCs for over 10 years and after trying a Mac and seeing how user friendly it is, I stopped using PC more and more...now I never do.
The argument about Macs not having programs that PCs have is out the window now...you can find the same stuff or equivalent on a Mac now.
I just got tired of having to run stupid spyware/virus scanners and defragment every so often....there is way less maintenance needed on a mac.
Also Apple take into account design when they make products....it's all about the experience, menus, the way the OS flows, and the appearance of the computer/phone/whatever.....if you don't care about design and you've never used a Mac on a day to day basis and actually made it yours, you wouldn't understand why people prefer Apple products...
If the same company that's making the operating system is also making the computer/media player/phone....common sense tells you it's gonna work way better since it's all integrated.