I kinda think that's why God gave us free will. He gave us the ability to choose His gift of life with Jesus or not. He gives us the opportunity every day to make His heart soar or sink. Yes, He loves us no matter if we fail or flourish, just like any parent does. But it sure would be boring for God if He just made us like robots that always please Him and can't choose to do so! Yes, a perfect kid would be nice, but it would sure get monotonous. Where's the excitement in that? He wants our hearts, not hard wiring. I realize that your child flying or flopping on the high bar is not a matter of choice for them - they would choose to fly every time. But if they did, every time, no one would watch, and no one would get the glory!
On the flip side (no pun intended), this nervous mother is not at all what God looks like when He is waiting for us to make a choice that would either make Him look bigger or smaller in someone else's eyes. He is BIG no matter what. He will be glorified no matter what. He has a ton of children that will draw others to His greatness, but He doesn't need them to do that in order to be great. He knows that when we make choices that ultimately bring Him praise - it's our hearts that soar, too! And, as any parent would, He wants us to fly.