What do you think about people who are inconsiderate of others?

I think that anyone who doesn't take a moment to think about the other person's feeling is just stupid or has no brain. They should probably take a moment to think about what the person is going to feel or how he/she is going to act. I think it come natural to a lot of people most of the time but then then theres people who just don't care about others and it may cause them some difficulties. I like to take into consideration other people's feelings, reactions and thoughts. It comes naturally for some reason.