Are you not aware of the very casual prejudice you're showing with this comment, or do you not see a problem with it? Regardless of your political or religious

Are you not aware of the very casual prejudice you're showing with this comment, or do you not see a problem with it? Regardless of your political or religious views on people's right to exist, simple politeness if nothing else should prevent this sort of comment. I assume you wouldn't say it to their face, so why say it here?