>> Any discussion of my responsibility for my actions must take into account my personal contribution to the decision as a being.

>> again whence comes responsibility?

The only reason I can think of to assign responsibility is to "correctly" respond. Particularly in the form of reward or punishment. But if a person is not responsible for their actions, then neither is anyone responding to them. "Responsibility" comes from some sense of morality, which doesn't really exist without free will does it?