I made the switch, and I am pretty much in content. My affair with Linux started in 1991 and in 2000, I made a switch to OSX, primarily for the hardware and for good 12 years, my MacBook Pro served me well. Last year, I wanted to buy a new machine, considering the fact the new Retina MacBook Pro's RAM couldn't be upgraded (as much of it is hard wired), I decided to go with ThinkPad W530 with Linux on it. The reason to switch was also because of nature of my work, most of which involved testing distributed architectures. Since my switch to Ubuntu, I feel more at home these days.