Kant and MacIntyre: What determines morality?

MacIntyre's belief that we are born into our roles and that determines our morals and ethics seem more compelling to me. But it is not without flaws. Everyone does have different histories, and as over said as it is - no two people are the same. I, born as a girl have different roles than my brother. Being born in 1985 also sets me apart from my brother who was born in 1997. There are different things expected of him than are expected of me. When I am home I have to help out around the house. This includes doing dishes, taking out the trash, and watching him. He, on the other hand, does not have to perform these same tasks that I do, because he is only six years old. The only responsibilities that he has are to clean his toys up after he plays with them or to do his "homework" (if you can even call coloring a few pages that), and sometimes he doesn't even need to do those small tasks. Also, the time that I grew up in helped to shape my ideologies, and the time he is growing up in will shape his. The idea of the quest - by trying to be a moral person one may achieve this greater good - is much more flexible than Kant's argument. I can be a moral person if I try to be. Even if I make mistakes, or if I choose the wrong path, as long as I am making the attempt I am a moral person.
It is impossible to assign one moral philosophy as the correct one. …