Just to be clear, I have no problem with anyone using their Porsche as they see fit.
However, we should not be deluded on this point. When you hammer your car, there is a cost. And with a Porsche, this cost is likely to be substantial (try finding a $3000 create motor for you Boxster.)
It simply makes me laugh when folks say that driving at upper ends of the RPM spectrun is "good for the car." It may be good for you (and that is good) but is certainly is NOT good for the car.
The truth shall set you free.