Wow Larry!! I cannot believe, that I only saw this now. this was pretty emotional, just for your information!

Very deep, more than i imagined it might be...
Tho there's a huge possibility that I misunderstood it, but i love whatever analysis I came up with ! or felt...

As though you're speaking of few points, most parents would agree on!

1) a boy/girl is a boy/girl in parents eyes, even if they give birth for babies of their own. They remain their little kids, who they cant help but be concerned about.

2) The older we get, the bigger our parents worries get on us.

3)there's this personal tint in your piece, in which I felt like you're trying to say that when the son becomes a teenager it's not only their wish of having private life..
"you used the door example, most teenagers start wanting their doors shut, and knocked before someone comes in" but it's a lot more than just that..it's what's going on inside of them...perhaps fearing his rejection ?

^
okay, too much, I am not making sense anymore, lol I guess..

however this was my favorite, donu, it's so perfect

I don't know if I am able to still get down
To the level of innocence that your experience
Has created, this generational world ...
So much greater than the cultural icons you hold up
So much deeper than the decals on your board
So much more intense than the grind you execute
So much more private than any simple knock
on a door could hope for admittance.