Maybe it's because I'm new to Boxster ownership, but since I got mine last August, I have racked up over 5k. I know the new may wear off later on, but I drive it to work a couple times per week, and every chance I get on the weekend when it's not raining.
From my experience, two things deteriorate faster when not in use, cars and homes. If left sitting, they will develop leaks, cracks, etc. Maybe it's the lack of love?