good luck with that. I only have one boy, 3 years old now. Just look at it this way. If the kid bugs you too much, you can always sell him on the black market to a good family, and have a super fund for buying more infi.
Only occasionally will you feel like selling them, unless they are a jerk.
When they are tiny, you think every thing they do is a miracle, then you can't wait till they can play, and talk and walk, and then when they can, you will miss all the time when they were tiny.
My son's first word was Gun, second was Dadda, and third was momma (so help me Gun, clear as day... I was holding an AR-15 pistol he reached for it, and I asked if he wanted the gun. He looked at it, reached for it again and said GUN!)
I just took my 3 year old shooting for the first time (of course forgot to bring the camera). (he shot a couple hundred rounds out of a Ruger 10-22 with me holding and keeping it pointed in the right direction and the little tyke laughing and squeezing off 25 round mags as fast as he could pull the trigger).
Lots of good times to be had.