What do you think is the best profession/vocation in the world?

Agriculture both are good for earth and environment. Agriculture helps human, animals and the whole earth.

fro is a computer teacher... because eventhough i don't enjoy teaching i like meeting different people and learn new things from them.

I believe it is farming. Come to look at it. At the very beginning, man raised plants, fruit trees and animals for his food sustenance. If one is into it now, I will still consider it to be the noblest profession, for it is the farmers that feed the world. There is no way that anyone can deny the fact that no one may survive without food. Everyone eats, and everyone needs food to do that.