I just would like to add that taking a dump is so damn inconvenient! I mean when your doing something, you have to stop what it was and take the time to shit. Always happens at the wrong times it seems!
Well, another good reason:
When you listen to Anthrax, your worst fear is getting Caught In A Mosh...but when taking a dump, you have to worry about getting Caught In Your Zipper when you're done!