Do you drive? Do you walk? Do you use a flyswatter?
If you do any of these things, you are actively killing live creatures for your mere comfort.
Do you eat meat? You are responsible or killing animals for your eating enjoyment.
Do you own pets? If so, you are cruelly confining them against their will and nature.
Do you seek to kill mice or rats at home? You are killing them for your comfort, because very few of them will ever cause disease of consequence.
I find it very disturbing and disgusting that someone can live with all the massive killing they encourage, while disdaining medical experiments in which mice were specifically used to trial ways to heal mice and humans.
You have no justification for actions you can completely prevent, hypocrite.