Am I responsible for this?
Here's the crux of the issue:
We know that the universe operates by strict causality. Miracles and other alleged exceptions, such as the Heisenburg Uncertainty Priciple, quantum mechanics, etc. simply extend causality to the "Spiritual" realm, or add additional facets such as extra dimensions whose workings may lie beyond our immediate ability to know. In the case of the Uncertainty Principle, it's not that there isn't strict causality, it's just that we are limited by the nature of our physical universe in knowing things beyond a set finite precision. And, in the case of quantum mechanics, causality becomes expressed in terms of probabilities, but the probabilities can themselves be known.
Lack of knowledge, whether due to forces and events beyond our means of perception, or due to inherent constriants, such as the fact that knowing anything in the real world requires interacting with it, is not a basis for free will, but rather ignorance. Ignorance is hardly a synonym for volition.
We are further constrained, however, by certain inherent assumptions:
We assume that existence exists, that we exist, that knowledge is possible. Try denying any of the preceding and notice that the denial itself implies all three. We cannot help but assume these and a host of other ontological and epistemological axioms and their immediate derivatives. Yet, what is knowledge without free will?
Note that in the case of the fundamental axioms of existence and consciousness, we effectively have no free will, if by the term we mean the ability to deny or accept any particular conclusion. We can say or type the words, "Existence does not exist," but the claim is self-falsifying.