Agricultural practice served Darwin as the material basis for the elaboration of his theory of Evolution which explained the natural causation of the adaptation we see in the structure of the organic world. That was a great advance in the knowledge of living nature.
You travel with the hope that something unexpected will happen. It has to do with enjoying being lost and figuring it out and the satisfaction. I always get a little disappointed when I know too well where I'm going or when I've lived in a place so long that there's no chance I could possibly get lost.