I do understand determinism. Because I have Asperger's syndrome, many aspects of me are just because, and could not be any other way. Because I was born and raised in Mid West America, there are many things of me that just are and could not be any other way. Because I had a difficult childhood, there are many things of me that just are and could not be any other way.
But I can choose to learn how to socialize better and understand how certain things effect people, I can choose to gain understandings into how those from other places and cultures think and perceive the world and not be bound to Mid West norms, and I can choose to make efforts to get over past struggles and not dwell upon those pains.
Black-and-white approaches generally do not work, and they are almost always ill-fitted for approaches to life.