I had to replace my five year old HP 6715s and decided that 14" was the largest screen size I wanted (because I love my bag, and it doesn't take those wide screen 15" screens, and the old 'square' screens just aren't out there anymore). I went out looking, thinking the MBP 13" would turn out to be the most expensive option. To my surprise, it was the complete opposite.
There was one alternative though, that had twice the RAM, a powerful graphics card and so on that I almost bought. But when I did my research, I saw that loads of people mentioned they'd returned it because of the trackpad being utter ****, despite patches and what not. Not a single "I don't know what the others are talking about, my trackpad works" comment which you would otherwise always find. Since carrying around a mouse isn't an option for me, I decided it wasn't for me and went for the cheapest viable option - the MBP 13".
The trackpad is absolutely amazing, OS X was surprisingly easy to learn, having gone from DOS to Windows 7, stopping by almost every possible release of Windows in between. I haven't had half as many problems during the time I've had this as with other computers... It just turned out to be a cheap option (with screen size being pretty much the only thing I was looking for, so no other design factors), a great machine with an OS that I like and a trackpad that is "to die for".
These things, together with the overall user experience, is why I think this is the best computer I've ever had during the 26 years I've had a computer. But if I'd buy a 15" laptop, I'd probably not even consider Apple...
But, I'm still curious to how you dress, live and so on considering you seem to think it's a negative thing to factor in design when making a purchase.