Yes, of course I am. And I continue to do it because it hasn't yet screwed me over. Last semester I wrote my final English essay from 11 pm to 5 am the day it was due (so technically I turned it in late) and then uploaded it to the internet through the English department website. And it was the best essay I'd written in years.

Procrastinating probably does cause my grades to suffer a bit and when I procrastinate in other areas it has social ramifications, but again, they're not severe enough to make me stop.