I spent years using Linux on the desktop. I wrote software for it, was active in the community, and was an active core contributor to well-known distribution. I love Linux desktops.
Yet I stopped using them when I got my Macbook Air (before you flame me for using that machine, Linus himself uses one [0]). It's an absolutely phenomenal machine for my use.
Sadly, however, running Linux on it is a majorly sub-par experience. Touchpad drivers are awful (as is software which can support it), battery life is abysmal, and overall it's a pain in the ass. This is coming from someone who happily spent days configuring Gentoo and Exherbo[1] on his desktop just for fun.
True, I could invest in a laptop which is known to play nice with Linux, but frankly, there exists no machine on the market today which can compete with the Macbook Air for my use (ultra-portability, durability, extreme battery life, great screen and solid performance).
In short, I "succumb" because the portable hardware is the best. Plain and simple.
[0] http://www.cultofmac.com/162823/linux-creator-linus-torvalds... [1] http://www.exherbo.org/