To be or not to be, that is the question!

The reading of the book Dr Jekyll and Mr Hyde has led me to many reflections on humans' nature, feelings and behaviours.
To start with, are we born good or bad? If we consider religion ( Catholicism) we are born with the original sin, that is to say we are not born good at all until we are baptized so according to this precept we are not good from the very moment we open our eyes to life.
As we grow up we learn many things in our family, we make the first steps to what is right and wrong and our parents have the moral obligation of showing us what is good and what is not so we modify our behaviour.But what happens with those children who haven`t got parents? Does it mean they are going to be a menace to society?Because if nobody shows them the limits between good and evil ,then how are they suppose to know them?
The discussion about this issue is endless and there are many points of views but in my personal opinion we are born good or bad of course that the environment influences on us but does not determine us. For instance, not all the brothers or sisters who are suppose to share the same education and values are the same.Within the same family one brother is very nice and kind while the other is the other way round. I think we know what is right and wrong , good and evil and we have the choice and the freedom to whatever we want to do. So the question is to be or not to be evil, and is our choice.