Today, I use Linux as my primary OS (on an x86 PC, and on a Thinkpad), and I also use Irix (on an SGI O2). Linux has improved a great deal since I wrote this, specifically with respect to its ease of installation.
I think Linux is a great thing, because Linux is an alternative to Windows, and because, of all the operating systems that are at all relevant today, Unix is the best of a bad lot.