I have a herd of sheep, and kill off the wolves in order for my herd to survive. This allows more successful survival of sheep. This provides more food and utility for myself than if I did not kill the wolves.
I have a crop of corn. I kill off the new plants that have smaller kernels. This allows more successful survival of the larger kernels. This provides more food and utility for myself than if I did not kill the smaller kerneled plants.
I expect that opinions will vary on this.
I would say that what you are doing to the wolves counts as natural selection, albeit anthropogenic natural selection. And what you are doing to the corn counts as artificial selection.
Fundamentalism - the anti-American, anti-Christian branch of American Christianity