There's various advantages when you become morning person.
First, you have to fall asleep early to get up early.
Many hormons supports our body start secretating from 10:00PM.
It means, morning person can be healthier than night owl.
Second, there is a research result that having breakfast helps our brain to be active.
Morning people will start their work after having breakfast.
So, this also can make their work more effective.
In conclusion, because of biorythms and for having breakfast, being a morning person is much better than night owl.