Sometimes it takes a 6-month old niece to be snoozing peacefully on your shoulder for 45 minutes to realize what you missed with your own kids when they were babies.
Flashback to S reclining for hours on our lazyboy, Ads and later Y fast asleep on his shoulder, encircled in his strong warm arms. I would repeatedly ask him to put them down in the bed so that he could get on with whatever else he had to do.
He would reply, simply: I don't have anything to do that's better than this.
As my adorable niece breathed softly into my neck, I craved for a few more such peaceful hours with her, while my kids squabbled noisily in the background. I really hadn't got it the first two times, had I?
Seems like you need a third kid to bring that perspective into a mother's life :)