I don't want to play with the dog?
That's weird. Is there a reason you don't want to play with the dog?
I want to see what happens when I don't play with him.
Testing out your dog to see how he will react may be okay for a short time. However, you have to provide proper care for pets, it is wrong to neglected your dog's needs.
I'm bored and have nothing else to do.
Well you could play with the dog, that is lots of fun. Maybe teach him some tricks. Part of being a dog owner is taking care of your pet and neglect by ignoring him is not taking good care of him.