I laugh at other's misfortunes. Is there something wrong with me?

I can't help but laugh. Even when I myself am in deep sh*t, if someone else is trying to have me 'understand' the situation, I usually laugh at their seriousness about it, but in actuality their point is relevant. I laughed at my cousin when she was having an anxiety attack. I laugh at gory movies, even when I hear a guy with a feminine voice. Don't get me wrong, I have sympathy, I understand that whoever it is that's crying is most likely is going through a hard time. Am I a terrible person?