Scrub up all that oil? Say you have written a utility to burn CDs, are you going to reburn all the broken CDs if it turns out the utility had a problem? Reprint all the pages if your printer driver has a bug?
Anyway, I wish software engineers were more like car manufactures. No car is build without a design. No cars are delivered without being properly tested. The average car is better tested than most CPAN modules (ever seen a CPAN module with an actual stress test?). Most countries require by law that cars are tested - unlike software.
I think the software world can learn a lot from the car industry. (Not that I'm saying the car industry doesn't have its share of problems).