My Son Is 1-year-old Today And I’m Both Happy And Sad

My son, Joey, is 1-year-old today. It's a happy day. My wife says he's very much like me since he tends to chew on stuff. Not sure exactly what that means, but what's important is he's a healthy boy that loves life. But for me, the dad, it's also a little sad. 

I am not a sentimental person, but I've started to realize that I'll never have a child this age again. Unless there's something my wife isn't telling me, there will be no more babies. Can someone please cue up the theme from "The Wonder Years" for me?

This will be a big shock (*feel the sarcasm*) but I don't have any big, deep and/or profound thoughts about this. Just a feeling of happy and sad all at the same time. I have terrific kids all the way up to 19 years old. But, there will be no more babies. Well, at least none that are not named me.