There's a reason sarcasm is called the lowest form of wit. It's much easier to sarcastically say P than to put forth a logical argument for not-P. And it's real

There's a reason sarcasm is called the lowest form of wit. It's much easier to sarcastically say P than to put forth a logical argument for not-P. And it's really rather annoying, because if you do happen to believe P (or some moderate point of view between P and not P) then a sarcastic comment gives no actual hook to start a discussion. That is why I think comments like yours should be discouraged.