What's wrong with McDonald's coffee?

Most of the choices are too sweet,they're awful. It's an adult beverage and it shouldn't taste like it's made for kids.Even the artificial sweetener choices are bad. I've tried just plain iced coffee but it all lacks consistency.Sometimes it's good, sometimes it tastes like I'm drinking liquid coffee grounds.Yuck. When the product first came out it was very good. Now I have to stand there and ask them to put in less syrup etc. Even though the sign says we can have it made our way, the employees don't want to do that.The point of McDonald's is that you can get the same food at every "restaurant" and I never know how they will make it.