What makes your heart sing?

I'm reading a book right now that asked the question, what makes your heart sing? 

So I sat and thought about it... What makes my heart sing?

It's getting to meet a new baby... It's capturing sweet newborn smiles... It's keeping them that size forever in print...It's seeing the little ones that I photograph when their eyes light up and they call me Miss Kim... It's when they ask for the frog or the ladybug... It's seeing a family that I've known for years who moved away and comes back to have me take their pictures... It's hearing my clients ooh and ahh over their images that I captured... It's seeing the images that I took printed and hanging on the walls of a home... It's getting to know a couple and hearing the story of their engagement.... It's seeing the love between a bride and a groom on their wedding day... It's hugging the bride and groom at the end of the night and saying goodbye to the bridal party knowing that I was a big part of the day... It's not being able to wait to load at least a few wedding images after a long day even though I need to go to bed... It's looking at that wow moment that I helped to create on a couple's wedding day. To sum it up, my photography makes my heart sing!! 

What makes your heart sing???