There are some people out there (they call themselves atheists) who believe the effective way to offend God is to deny his existence. How does that make them happy when it's that same God who created them to render worship? Isn't this like a motor car deciding for itself what route its going to take to get to its destination?

(Worship is what everyone does on a daily basis, whether they are aware of it or not. It does not need to be formal).