Avoid if possible.
That's the thing. I can't. Because I want a computer I don't hate. There's nobody else who makes a machine I want to spend 8+ hours a day working and playing on.
There are some PC manufacturers where I can get some of what I want, but I've yet to see one where I can get all of it--I like Lenovo's build quality and aesthetic, for example, but their laptops are universally underspecced for what I want (if your only GPU is Intel, you are not getting my money) and I can't get a Retina display, which I now consider mandatory, anywhere else. And, while we're at it, if you're significantly heavier than my rMBP and don't provide at least competitive battery life, you're out too. I carry around enough crap as it is.
Worse, there are no operating systems other than OS X that fulfill my needs of a pleasant-to-use Unix/Linux system--certainly no Linux distribution comes close on the "pleasant-to-use" part; I'd rather use Windows 7 and Cygwin than any Linux desktop I've been subjected to in the last five years.
For me it's the same as it was with iOS--until Android 4.0 there was simply no worthy competition to iOS as far as I was concerned, but 4.x is fantastic and I switched over because it gave me the environment I don't hate plus the ability to mess around and customize it to my liking. But the first part is more important. If there was a Linux distribution with Apple levels of attention to detail and a modicum of taste--and that doesn't mean "looks like OS X", something different could be fine so long as it was designed for human beings instead of neckbeards and was uncompromising in its attention to detail--I'd probably be there. There isn't (and very well may never be), so I'm not.