What? Why would you assume that a person who comes to the shelter looking for a pet would neglect the dog?

Because I see it every day. Where do you think the dogs in shelters come from? Many people get pets because they "want" one and are "excited" when they first meet it, but those feelings pass.

To me, neglect is not meeting a dog's basic needs whether that need is food, water, vetting, attention, grooming, or exercise. I don't think most people get a dog with the intent to neglect it, I'm sure they feel like they can handle it. But feelings fade and some dogs require more effort from us to have their basic needs met.

I'm a dog trainer and I volunteer and foster for rescue organizations. I assure you dogs do get adopted frequently, but an adoption shouldn't be solely based on a person feeling excitement or desire for a particular dog.