>the experience of running OS X on Apple hardware is simply unmatched.
Eh. Seems a lot of people on HN believe this, but it's not always the case. Just a quick visit to discussion.apple.com will show all sorts of issues people have with the OS including bugs like http://www.cnet.com/news/some-lion-users-plagued-by-black-sc... which is a bug in the OS.
Edit: just some things I noticed in the short time I used OS X: The gmail integration is buggy. I didn't get messages on time, and I have to either quit the app or take Mail offline and then online again before new mail will start streaming in. Sometime I couldn't get it to quit.
The 'quicklook' thing seemed really slow, which seemed to be a problem a lot of users had.
Multi-monitor support isn't that great. I had multiple windows on multiple desktops for some reason and it just felt weird.
I had issues with audio stopping and not working again until I did a reboot.
In some apps scrolling was really rough.
Apple seems to think I should unitask on a single monitor. That's not how I work, so it's not for me.
People are saying they have to spend a lot of time configuring Linux but in my experience that's not the case (obviously once it's installed in the case of Arch, which for me is a worthwhile investment).
I do admire the polish of OS X's desktop though.
Now for hackers, you already get a long way with the built-in BSD commands, but one word : http://brew.sh
I'm sure people will immediately chime in and say that Thinkpads work well with Ubuntu or that System76 does the job, and I'm sure it does, but the experience of running OS X on Apple hardware is simply unmatched.