It's part of the game. You are free to resculpt the world in any way you see fit. Of course there will probably be others who come in and try to mold it into their ideal view as well.
Pluss there are those who will destroy your work just to grief you.
i used to periodically change the tree on my street just for fun, but stopped changing it to wood when one of my neighbors pointed out that it's a hassle to handfeed the pigs.
but the world (or parts of it) are designed to be changed.