Right. But if your decision whether or not to go to school really depends on a quantum event with 50% probability, then you're not choosing to go to school for reasons. (It would be incorrect, in that case, to say "I chose to go to grad school because I knew I'd be better off with a postgraduate degree.") Instead, one is choosing a mixed strategy. So to the extent that one's decision is not deterministic, one doesn't really choose. Similar things could be said for non-quantum chaos.

I believe there's a relevant article where Eliezer defends the view that determinism is required for (his conception of) free will. EDIT: Ah yes, this one. If you and I disagree, it's probably merely about the meaning of the word "choose". In any case, talking about Everett branches when you're describing the deliberations you go through in making an everyday choice like that is almost certainly mistaken.