Like most people, I treat people I know with a lot more kindness than people I don't. Whether most of us like to admit it or not, our actions demonstrate that we don't generally have much regard for distant strangers, no matter how profoundly they suffer and how much we benefit from it (see the conditions in which most of our goods are made). You can call that immoral, but rational self interest is absolutely normal human behaviour, and I'm not even a psychopath.

My point is that the niches exist to be exploited by the least scrupulous among us. As long as the niches exist, they will be exploited. Resenting that is akin to resenting the biggest fish in the pond for being so damn aggressive - it's pointless. We live in a pond, and we should focus on maintaining the nonviolent and often ecosystem-benefitting nature of the exploitation (since it is hard-won and precarious), rather than resent the inescapable reality of its existence.