Laughing People

You know I was reading someone's blog.   He was in school taking up photography.  He was having a discussion with his teacher and he was saying that he was going to take up acting.  The teacher laughed at him.  I got annoyed because whenever someone mentions they want to do some acting, the other person laughs at it.  I am not sure why teachers, families, friends tend to laugh at those who wants to break into acting.  Instead of laughing about it, why don't they encourage them. They should be happy at those who want to break into acting if it is going to make them feel about about it.  Its a disgrace to hear these kind of things and a teacher to act this way rather supporting him.