Because I needed a computer that would last longer than 6 months without giving me major issues. Maybe I was cursed, but I went through 3 PCs real quick during the Vista and 7 era because they had so many issues that would start cropping up around the 6 month mark. Bought my first personal Mac in 2011 (I had used them in school on and off before that) and never looked back.

I second this.

I had a maxed out 2014 15" that I bought in January of 2015. I wanted a 13" but even after maxing it out, the 15" was still substantially more powerful and a better fit for my needs. Even then it never performed all that well (especially when it would use the horrendously awful integrated graphics instead of the Nvidia card) and had to be sent in for major repairs multiple times because it would just randomly stop working. I definitely got my money’s worth with AppleCare on that machine though.

Was it the Touch Bar/usb-c only 15 or the previous retina 15” (or the even older 15” with the disc drive)? The 15” air is about the same size as the Touch Bar 15” pro. The older retina 15” is about the same size as the current 16” (which is a lot bigger than the 15” air, a lot more so than it sounds). The unibody and older 15” is a lot bigger than anything Apple currently sells.