well I think there are several reasons.. firstly, the brain is the most complex organ in the human body, so much about it can still not be explained.. another thing is that the injuries of the heart and the disease of the mind are simply not obvious like a bad cold or a broken arm to many people.. after all, we are shallow beings and depend on what our eyes can see, we often fail to look beyond this for different reasons.. some people have never dealt with these things and they are just ignorant, some even think they are stronger/superior but in reality, they are simply luckier.. tears, emotion, any kind of struggle on the inside.. these things are still often seen as weakness by many people.. we hate to be judged but we judge others, it's a cycle of pain.. truthfully, it's heartbreaking to me because I understand this eternal war of sadness within yourself all too well.. it's wrong, unfair, frustrating.. but we must remember that there will always, always be people who will understand, who will be kind...