@chai2,
Yes, I see what you're saying, but I did express all that during, and at the conclusion of the interview as we were shaking hands, etc.
I guess it seems a bit redundant to me, and maybe an intrusion? It feels like I would be "bothering" them.
Besides, what if my email arrives after they've already made their decision? It was hinted at that the person would be chosen at any time this week, probably by Friday.