Sorry for you and your friends, spending more money on a computer than you need to. For me a computer is a tool, and they all are essentially the same thing so I don't allow myself to be identified and validated by my operating system choice, frankly I couldn't care less, as long as they get the job done I'm happy. Macs are gorgeous, quality devices, but I'm not going to pay extra for those aspects of a computer, I just need it to do what it does and if it is a lumpy block of plastic who cares. I will guarantee you that if you had two graphic designers, equally skilled in every way, gave one a Mac and one a Windows PC, in Photoshop they would get the same work done at the same speed. Most people like the OS they first use which makes sense.
My brother will use both, he really respects the Mac OS, but for nuts and bolts business environments, not a chance.