What gives you a "warm feeling" inside when playing?

My toddler getting a little sad icon when one of her mothers went off to work. Seeing my toddlers do their bob to music, my kids and teens coming home with a little rainbow over their heads as top students, and my teens having those little mortifications from things that happened at school. (The look on their faces - I just want to hug them and tell them that in another thirty years, it won't matter.)