I never said it was bad for servers but it's a joke for PC's.
		
		
	 
Really depends on a couple of factors: One, the distribution of Linux. And, two, the person using the distro. What one person may find perfect for them and enabling of their productivity, another may not. With Linux folks (and Mac people for that matter), they've at least explored outside the Windows universe and discovered something better (at least for them). Most people never do that. I've used several flavors of UNIX and LINUX, including SCO, AIX, HP-UX, Redhat, Yellowdog and Ubuntu. I was most impressed with Ubuntu and I was forced to use HP-UX and AIX at work for awhile. But, my focus these days is on ease of use and administration so that the system just works and works well so that I can engage in my other creative endeavors like music, writing, graphic design and web design and production rather than constantly mucking around with the guts of the OS. For me, the Mac system provides that with a good level of security, no viruses or malware to worry about, and in a multi-threaded environment that uses resources efficiently. My Macs just work and they have a tendency to work for a very, very long time and run the latest and greatest Mac OS for a very, very long time (My in-laws have an original Bondi Blue iMac that's running Mac OS X 10.3 extremely well...that system is about eight years old). And, I find them smartly designed and intuitive to use. 
For aptget, he's found something that suits him very well in Ubuntu (I believe that's the flavor he favors). To say that LINUX is worthless as a desktop system, though, is a bit naive. I know plenty of LINUX-heads who use various flavors of it exclusively on their PC's and they're very happy doing so and just as productive as anyone else. It comes down to a matter of taste. What I CAN'T really fathom these days, though, is WHY people stay with the Windows OS for any reason at all. It's produced by a company that rapes it's customers, it's inferior and insecure in comparison to pretty much everything else on the market, it's easily hacked and riddled with viruses/malware/trojans/spyware, it's unreliable and prone to data loss and crashes, and the UI is a complete mess. And yet people still use it and upgrade to the latest and greatest version of it, no matter how painful, because they refuse to try anything new at all. Ever. Most Mac and LINUX folks have been forced to use Windows extensively (hell, I was an NT SysAdmin, for crying out loud), so it's not like they don't know what they're missing. 
So, before you bash LINUX, maybe really give a distro of it a try? Ubuntu is pretty well put together, all in all. Otherwise, you're really just stating a relatively uninformed opinion. Nothing wrong with that because we all do it at times, but it doesn't have to be that way. 
jag