Why is it important to come be a good person? Why not?

Why is it important to become a good person? Well, I think it's very important to become a good person because if you aren't a good person, you are gonna end alone, sad, and miserable. If you are a bad person no one will talk to you, your presence will be annoying and everyone will be wishing to kick your annoying butt. You have to be a good person because you will help the world and the people in there, everyone loves the good guy, I guess.. Anyway, I don't know what else can I say, of course there's no one perfect but you got to try to be a better person not just for you, also for your parents, your family, your friends and your God. There also that thing called "Karma", if you are a bad person, just bad things will happen to you, but if you are a good person, good things will happen to you.. Well, that's what Karma says, if your choise to be good or bad, I highly recommend to be a good person.