First, please let me appologize if this reply sounds a little blunt. That is NOT my intention. I am only trying to answer your question. :-)
…And the answer is simple, other people are just not built, or wired, the same way that you are. YOU are *able* to feel deeply about things that you see, and hear, and touch, and smell. But, the world would be a very sad and un-interesting place if everybody felt about things as deeply as you are *able* to. Furthermore, the world would be a very sad and un-interesting place if there were NO people like you…
It takes many different types of people to have a healthy society. Try to imagine YOU in the role of a Police officer. You probably would not be able to handle the type of psychological strain that you would feel. And so, thank goodness that there are people who are NOT like you, people who are able to look at a dead body and NOT break down in tears. Thank goodness there are people who are built in such a way that they have little empathy for others, because otherwise, who would lead, who would defend???
So, other people live their lives, and are able to sleep well every night - even though there are starving people in Africa and hurricanes in Central America - because THAT IS NATURES WAY.
You bring to the world a sense of wonder… Those who wouldn’t naturally FEEL anything, to the point of breaking down, while looking at a dead body, benefit and gain balance from people like you because a painting you created, or a song you wrote, brought a tear to their eye.
You DON’T need to appologize for carring. But, others MAY NEED to think it’s stupid… Be thankful of that. If it weren’t for that person, you may not have been able to write a letter, put it in a mailbox and KNOW that it will arrive where you wanted it. Do not appologize for carring, that is WHO you are. Don’t be ofended by your own behaviour. Instead, ask them why they think it’s stupid, rather than simply defending yourself. Engage them in a conversation. That is why we have so many different *types* of people, we can learn from them. The world who be a bodring place, indeed.