Why have a dog, if...?

you have it chained up year round outside? I live in a rural area of KY where it is common to have dogs outside year round either chained up or in a 8'X10' kennel and more often than not, they have very little social interaction with their owners or other animals. Some are even on chains that give a meager 6 ft of slack for the dog to circle around with.

I don't understand, what's the point of having these dogs and feeding them super cheap/low quality dog food if no one plays withe them or gives them attention?