Your question ultimately is a philosophical question of aesthetics, which has a lot to it. It's also a loaded question.
What's the point of landscapes? Wildlife? Pictures of friends? Hell, even wedding photos? Preservation of a moment, and aesthetic visual beauty.
What's the point of landscapes? Wildlife? Pictures of friends? Hell, even wedding photos? Preservation of a moment, and aesthetic visual beauty.

I guess street photography feels different to me because it's both about the process and the end product. It requires more energy and a lot more work to get one good image.
