Another blatant inaccuracy. They really are roughly on par with each other these days. I remain on OSX most of the time simply because I've been set up that way for years, but the concept that one is significantly more reliable than the other since Windows 7 is complete crap, and many graphics intensive things (not just games) run better on Windows as Apple has let their OpenGL implementation go downhill for years.
On the macbook pro, if you got a good price on it, it's still well worth it. I've killed Apple laptops even though I'm careful with them (I don't move them around when they're open, only use them on flat surfaces, and I allow them to cool down after heavy use before putting the machine to sleep). It sounds like you bought a lightly used unit though which is great.
I bought a new Macbook Pro in 2009 and it's still working fine today. I use it everyday and if you've noticed in my sig I have an Nehalem i7 PC. I've used PCs since 1993. I've had a 386, Pentium, Pentium 3, AMD Thoroughbred and Barton, Intel Conroe, sticking with Nehalem will upgrade when Ivy Bridge comes out. Macs have way less problems than Windows. Windows you must know about patching this, bios that, be comfortable with reformatting on a regular basis, malware protection. Building a new PC be prepared to troubleshoot.
I'd happily stay on Leopard forever, but one program I use requires snow Leopard. Will probably not upgrade to Lion until absolutely required. Stability is most important to me.
Windows 7 has been a massive improvement but without a competitor like Apple we would most likely have interfaces more closely resembling Windows 2000. In fact it seems like they are going back to that boxy style with Metro. In any case, I would recommend for ease of use and stability a Mac over a Windows based PC every day of the week.
Computers nowadays are appliances, tools for getting the job done. Back in the day, they were geeky tinkering machines you had fun with, that's if your idea of fun is figuring out why your machine has slowed to a crawl after minimal use.
I've accidentally dropped my Macbook on the floor from about desk height 3 times, and there's a tiny dent on the cover you would barely notice unless I told you about it. I've a dell laptop I dropped once and the front fascia is broken. Quality casing matters for durability and stability.
Factor in excellent residuals and great image, the choice is simple. You do pay for it though, for all other models except the most basic Macbook Pro. That is the best value computer you can buy IMO.
