"I'm more of a night owl, I prefer to work then".
Whether you feel more comfortable working in the morning or at night is not why you should wake up early.
The reason to wake up early is primarily for one reason...it builds discipline.
In order to become more productive you need to become disciplined in what you do.
Getting up at the crack of dawn will instil in you the correct mindset to complete numerous tasks throughout the day.
The most successful people in the world tend to be early risers.