I only have one computer at home and I'm glad it's a Mac. When I switched from a dual-boot Windows/Linux box to an Apple notebook in 2002, I eliminated 98% of my system administration load. Best damned computer decision I made in my life.
Some people have better things to do with their time than play on computers all day long.
I agree. I have been writing software since I was 8 years old and I have been doing it professionally for 16 years. I am the "computer expert" in the family and get to do tech support for all the family computers. Whenever they come up on time to buy a new computer I recommend Apple gear and Macs so as to make my life easier. I switched back to Mac in late 2009 and things have been sooooo much smoother.
Being a Linux user too, people wonder why I'm not a big Android fan. The answer is simple. I spend enough time having to tinker all day with computers. When it comes to my phone or tablet, I don't want to tinker, I want it to just work. I don't mind troubleshooting some customer's problem and getting some software to work just right because I get paid for that. Nobody pays me to try to configure an Android device to do things just the way I would like them to -- I have better things to do with my time.
When it comes to desktops I see it this way:
Windows-7 is pretty good and fairly configurable, but harder to maintain in the long term. And if anything like its predecessors is going to require a reinstall at some point down the line. Windows has drivers for every piece of hardware though, but the OS does not install all of them for you, making it impossible to boot a Windows drive to any machine.
Linux is the ultimate in configurability and it is very powerful, but unless I am getting paid to research forums and discover and keep up on all the cool things I can do its not worth it. Long-term maintenance can be easy with the right setup / distribution -- the boxes just run and keep running. Linux provides drivers for most hardware and if not somebody will make when in a month or two of release, but the drivers often require some tweaks to get things working just right.
Mac OS X is powerful and safe. Configurability is there if you look for it, but the thing just runs and does some things decently without you having to worry about. Like Linux, the Mac just keeps on running -- I rarely reboot the thing and I don't have to worry about background garbage slowing it down over time. Mac OS X has limited driver support compared to the other two; however, the hardware Apple ships with is very well tested and the OS and hardware work very well together -- third-party accessories are sometimes a problem.
On mobile:
WebOS is very slick but under-the-hood and developer-wise it is not as advanced as it needs to be. I've only had limited experience with it -- the notification system is the best I have seen though.
Android has a rock-solid Linux core and much of the same configurability as its desktop-cousin. It is not as well mated to the hardware as it should be (my early evaluation of the Xoom makes me think it may be the first exception). On Android you still have to worry about malware, and your ability to maintain any device in the long term for upgrades and such. Battery management on Android is as pathetic as notifications on iOS -- nobody should have to do a little dance with their phones to shut things on and off just so they have power 3 hours later.
iOS is a simple easy-to-use experience and very powerful. Configurability is its weak suit - you have to wait for Apple to provide a way for things you can't yet do, but often there is "an App for that" for many of the things you want to do. The ecosystems and the interface (with the notable exception of notifications) are amazing. Finally, Apple does an good job of keeping phones that are 2-generations old fairly current on software rather than just abandoning them. Finally, battery management is unsurpassed on iOS.
I have yet to have hands-on time with Windows Phone devices. It looks like these are the devices you want though if you are an XBox gamer or heavily into Facebook and Twitter and maybe some games. I think Windows Phone needs a couple of revisions before it will come along though.