Pizza is fine. Delivery people are not very personable, and I'd say border on rude. It's not acceptable to ignore a customer when they greet you, nor is it okay to toss receipts on top of the box and shove them at the customer as they are trying to be friendly. A sarcastic "thanks for the tip" doesn't help either.
I'm not an unreasonable person. I work in customer relations. I understand there are scenarios where jumping through hoops isn't required, so I don't expect that. I do expect common decency from any service provider. Absolutely no reason for me to pay premium prices to be treated like trash.
If I wanted that, I'd stick with the local Pizza Hut or something.