I owned 0 of them up until a few months ago. I always got by through my brother's PS2 (it was more of a "joint" gift but I always considered it his), then his GC, then his XBox, and from borrowing gaming time from my friends. But, once I graduated from my undergrad days and hit the fun of grad school, I needed something to pass the time. I ended up getting the XBox as sort of a grad school present. Why an XBox? Well, I highly prefer the PS2 but since a great number of my friends play on Live and I am now seperated from the rest of them by at least 600 miles it was the feasible option for gaming.
Then, a few weeks ago, I picked up a PS2 on campus. A PS2 for $80 with Tiger Woods PGA Tour 2004, Kingdom Hearts, Medal of Honor: Frontline, a network adaptor, a Sony 8MB memory card, two Dual Shock controllers, and a slightly broken Logitech headset...well, it was worth the price of admission.
So, for a brief shining moment, I was solely an XBox kind of guy. Hey, I'm not a huge fan of the overall XBox library but there's something about playing a few games with friends across the country at any time of day that just edges out other things for me.