If someone responds with sarcasm to your post, do you automatically take it as hostility instead of recognising it as sarcasm?

People are getting nastier in general. You have to be careful with gag answers. I just had someone disproportionately react to a gag answer. He might have just had a horrible day too, for all I know. I recognize sarcasm, and as long as it's not mean spirited, I respect it. Even if it [b]is[/b] mean spirited, I don't mind as long as it's funny.