Damn you have a cute family :-)
I totally agree with you @pappa-pepper. i don't have any kids of my own, and unfortunately I never will. But I view kids as you do - they are a blessing and a source of extraordinary pleasure.
No matter how tired and grumpy I am, the sight of my godson or his little brother playing is enough to make me smile.
So, aroha to you my friend. May you have the children you deserve.