You're comparing an inanimate object to an animal. Animals feel pain. Balls (you know what i mean) dont.
Do even you understand what the hell you're talking about? I mean do i really need to explain to you that even though pain is a warning signal its still wrong to cause it to a living being?
I'm with Gorbachioo on this one.
Where does the comparison lie with a ball and a pig?
Balls do not even have warnings in place, as you so cautiously call 'pain.'
Even if you call pain a warning, humans have it, pigs have it, balls do not have it.
If you roll a ball down a hill, a ball cannot stop if a rock hits it, but a pig or human can (or can certainly try).
Very odd arguement you are trying to develop there Golena.