"I suggest you go to Amazon.com and search under Peter Singer. Dr. Singer is a tenured Professor of Bioethics at Princeton University. He believes, among other things, that old people should be euthanized, that sex with animals is O.K., that deformed children should be killed at birth, etc. He's not nuts. He's actually quite smart. And he's also honest. An honest atheist. Libertarians face the same quandries, but libertarians are actually decent people that want pure freedom without God. But, unfortunately, liberty without Jesus Christ is impossible. Sorry." There are unreasonable Democrats, unreasonable Republicans, unreasonable Libertarians, unreasonable Christinans ......
But you can't claim it is REASONABLE for ANY ONE to wish death on another.
You don't think they're reasonable. Dr. Singer thinks he's eminently reasonable. Who's right? You or him? And to which authority do you appeal to decide who's right and who's wrong?