People think I am too _________ because.....

People think I am too nonchalant because I am usually unamused by things that amuse people I am around. For example, when people get in trouble or are nervous I usually feel as if the situation isn't that big of a deal when in retrospect it most likely is. Under pressure situations, like taking a penalty kick in overtime, I do not get nervous with the game on the line and am perfectly calm when risking the game for my team. When talking to or meeting new people, I show and obtain no nervous feelings and always remain unemotional.