Because He loves every last one of us. And is not willing that any should perish but that all should come to a knowledge of repentance. Now, if He'd only written that stuff down for us. :-)
And how powerful man must be to thwart the Creator of heaven and earth.
"Therefore hath he mercy on whom he will have mercy, and whom he will he hardeneth." - Romans 9:18.
I guess maybe He does gets His way sometimes, eh?
Well, everybody except Esau, right? ;^)