The miracle of birth still blows me away!
It is, indeed, very humbling. With my oldest, things were going good until it was time go to the delivery room and push. They started losing the heartbeat and the pushing was doing nothing. The cord was wrapped around his neck. The doctor had to turn him to unwrap the cord, something my wife described as the most painful thing ever, and then he came out. I can't think of any time in my life when I experienced such a huge range of emotion in such a short time.
With my other son, the whole thing was over in less than 4 hours. Text book smooth.