Why don`t we help each other?

When I was in school, I didn`t see people in the right way. I thought that all the people love to help and don't like to see others suffer from any thing, but when I grew up I realized  that this was not the case. Only a few people care about each other and want to help. When I though about this issue I got upset and promised myself that I'll help people and try to make them happy. I started to do some charitable things and this makes me so proud of myself. In conclusion, can anyone tell me why other people don`t like to help each other?

Just a note - when you are referring to yourself you need to put the "my" and "self" together. "myself"

Also, try not to use the word "things" when you are writing a paper. Try to come up for the word you are describing. For exampe, instead of saying "charitable things" why don't you list out some of the things you have been doing. All in all, great job!