

there is a bit of a shifting of goalposts here with respect to how you define making a ‘choice’ with regard to logical and physical possibility/impossibility.
suppose i place a marble on a slope and let go. the marble rolls down due to gravity. did the marble ‘choose’ to roll down? it does not seem so.
is it possible for the opposite to occur, that is, the marble to roll up?
- logically? yes, there is nothing logically contradictory about the marble rolling up after i drop it
- physically? no, due to the laws of gravity
the logical possibility that the marble can roll upwards does not mean that it is a free will choice. replace the marble with an agent ‘choosing’ between options A and B, supposing the agent ‘chooses’ B. because you claim to be determinist, i take it you believe physics completely dictates the universe’s events, thus it is physical necessity that the agent ‘chooses’ B. however, it is logically possible for the agent to ‘choose’ A as choosing A does not entail anything logically contradictory.
what is the difference in the case of the agent vs. the marble? or do you actually believe the marble ‘chooses’ to roll down?
incidentally, i agree with all this. but what a theist would probably say in response is that if god exists, he defines what evil is. what you perceive as evil is just your perception and can be wrong.
its not a bad argument, but i believe contrarily we have deep moral intuitions and can generally rationalize them in a kantian way, i believe we can make moral judgements independently of god.