Don't have kids my self yet this really resonated with me.

While my son and I were putting in enough maximum effort to make even Deadpool proud, my daughter stood like a tiny, delicate statue with her net stationed motionless in front of her. The only part of her that moved was her mouth as her smile increased a little bit every time my son and I flopped around. After a sixty second round of fun, my daughter stood grinning and giggling as I switched off the machine.

Maybe it was just the fact of family loving and playing together, such a typical childhood memory, very nice. Brought the biggest smile to my face.