No war started as far as I'm concerned. I own and build my own PCs as well. They have their own purposes. Of course the built in obsolescence is part of the tech industry. If it wasn't the industry would die as no one would upgrade unless their current machine broke!

However, once I bought my MBP I realized one thing: obsolescence comes faster on the Windows machine than Macs. Part is the hardware difference, but part is definitely OS driven. OSX is just a much smoother, superior platform than Windows because of its limitations (Apple controls the hardware, etc.). As such, the Mac users I've gotten to know use their machines for 5-6 years [except for Ron who seems to be intent on keeping Apple's profit margins up whenever they release a new computer

], whereas Windows users often
have to upgrade every 3-4 years and by the end of that lifespan their machines are experiencing anything from slow-down when using basic tasks to flat out dying slow deaths. The only exception to this [laptop wise] was the old IBM Thinkpads before they became Lenovo and catered to the masses. They were priced like Macs and they were built like tanks. The Business School I used to work for mandated those for incoming students and I was always impressed with their specs, performance, and build quality.
I fully acknowledge, and the market bears this out, that a less expensive Windows machine is suitable for the majority of people out there. Macs are really for either specialists [either hobbyists or professionals] in a certain field that Apple excels in (i.e. photography, graphic design, music, film, etc.) or just are sick of the drawbacks that Windows carries with it and want a smoother experience and are willing to pay extra for it. I actually started out the latter and became the former. I suspect I'm not novel in that respect.
The reason I'm willing to pay for a Mac has little to do with the actual hardware or, as the Microsoft Laptop Hunters Ad implies the "sexiness". It has to do with exactly that:
The Mac, and its complete user experience (especially in music creation and editing) makes me want to use it and be creative with it artistically, in a way that no Windows experience ever did. That's worth more than its weight in gold.
The most expensive gym equipment isn't worth a damn if you aren't motivated to use it to better your health. That's the way I view my Mac.