Mug - Sputum

Some things happen that there is really no need for.

Like spitting on the street, throwing rubbish out of a car window, being unkind to someone, macaroni cheese and war.

This is another of those: there is really no need for this mug.  How can this mug do anything to help humanity, or make someone happy?

It can't.

So why does it exist?  I have no idea.