By Creating Sentient Beings You Cause Them Harm Even If You Try To Help Them As Best As You Can

You might attempt to justify creating sentient beings (e.g., having children, breeding animals) by saying that you will do everything in your power to help them. The problem with this way of thinking is that no matter how hard you try to help them, they will still be harmed—significantly—maybe even immensely. The only way to truly protect them is to not create them.