No, my reasons are:
A) It crashes far too frequently to be usable as an application (I need reliability)
B) It expires after 45 days and I don't want to pay for it (I need cheap as free)
C) It takes over my entire system and whenever I uninstall it, I have to reassign all my images back to other viewers (It's bloatware)
I don't want to pirate if I don't have to.