Personally I enjoy having coffee in the morning. The reason why is because the smell of freshly brewed coffee is very, very intoxicating. Secondly as for me the taste of coffee is much better and has a more soothing effect.
The answer of this question will differ from person to person. And also some people will have their choice either of this option. I don't prefer tea or coffee in the morning. I like to have a tea in the evening.