Because am a Nigerian and you just insulted my country.
Do you know what it means to be called a scammer everywhere we go? And then I come online, on steemit, where I think I will be free from such harsh words only to see your comment.
Tell me, why shouldn't I get vexed?
My comment was not directly at you... you just allowed yourself to feel insulted. That's where no one else has power over, but you.