Warning: should you become a dad, the fat lady never sings
Sometimes your child will do things that illuminate an ugly, insensitive, stupid, side of themselves. They may get mad at you for simply doing the right thing and making them face their own faults. They may pout and not talk to you and try to manipulate you. They may piss you off to no end by deliberately going against your best advice. You may find yourself wanting to beat some butt and be quite the hardass.
Warning, right when you're about as up to your eyeballs as you can be, you'll look at that kid and you will see a baby, a toddler, a prom date. You will see the small moments that make up a dads storehouse of info and guide your intuition and bond with that kid. You'll see that kids true eyes and you'll think about them and want nothing more than for them to be safe and sound and happy.
This will get in the way of a dad's righteous might. It will get in the way of a true grumpy face. It will steal the loud thunder, calm the storm, and leave you with a wimpy breeze at times. The warning is it will come unexpectedly against your greatest fortitude and resolve. It's a dad's weak spot and in the end, you'll be incredibly thankful for it. In the end, the fat lady never sings because it is never over and that is one of the greatest blessings of your life.