AB,
Because biology has not been able to define what comprises "self aware".
But it's a long way toward doing that and, even it wasn't, why on earth would you think that would imply a non-biological explanation?
You've had this explained countless times but you keep ignoring your mistake. The absence or incompleteness of an explanation tells you absolutely nothing whatever about a conjcture you may want to use to fill the gap (especially one for which there's no "definition" of any kind, so it fails even your very bad argument).
Why won't you address this?
I agree that we differ in our definitions of "you" and "choice".
Yes, mine rests on reason and evidence; yours is unqualified assertion. Why then should anyone listen to you?
I understand "You" to be the spiritual entity which enables you to consciously choose between many viable alternatives.
I know you do. Absent a means to investigate the claim though, your understanding is just white noise.
Why won't you address this?
My understanding of your thought is that "you" are just part of the material continuum of this universe entirely controlled by the scientific laws of this universe with no ability to choose other than riding along with the pre determined reactions occurring in your physical brain.
Again you're confused about the word "choose" here but essentially yes - something is either caused by something that precedes it or it's random. It's binary. There is no third option. Just throwing "soul" into the mix about which "you haven't quite got the details worked out" or some such makes you appear ridiculous.
Is that really what you want?