My big objection is the pricing. It's fitting that that gets reflected in their name: StarBUCKS.
But I have to admit I've never been too wild about their coffee.
Many years ago, before Starbucks was on every street corner, my mother and I got whole bean coffee from one store. We began wondering about Starbucks, so one day we stopped and got a small quantity of coffee beans from them right before we went to our usual place. We admitted our sin while getting the usual coffee, and the person in the shop said we wouldn't like Starbucks. She was right.