If you demonstrated to an chimpanzee how you think and set goals in order to preserve "self" (and thus species) it probably wouldn't understand. To chimpanzees the notion of individuality that drives us is an incomprehensible concept. It is what separates us from them.

In the same way we can't comprehend what would drive SAI. I know it would do something but I can't determine any more reasons other than the imminent death of the universe - it would have reasons or whatever its concept of "reasons" is.