THOU SHALL MIGRATE
Nicolas Perriault wrote a nice article about switching away from the Mac to a Linux desktop. He has a similar vita (computer-wise) as me:
I was a Linux user 10 years ago but moved to being a Mac one, mainly because I was tired of maintaining an often broken system (hello xorg.conf), and Apple had quite an appealing offer at the time: a well-maintained Unix platform matching beautiful hardware, sought-after UX, access to editor apps like Photoshop and MS Office, so best of both worlds.
I, too, was a Linux user (Gentoo, to be accurate) until some time in 2006 (iirc) and I too got tired repairing my system over and over again. Now he is switching back to Linux:
To be frank, I was a happy Apple user in the early years, then the shine started to fade; messing up your system after upgrades became more frequent, Apple apps grown more and more bloated and intrusive (hello iTunes), UX started turning Kafkaian at times, too often I was finding myself tweaking and repairing stuff from the terminal...
My reasons are are a bit different, but I can relate to that.