This is why it's worth it

My kids have been fighting all week from the moment they wake up to the moment we finally get them to go to sleep. A normal person would think that children with almost a five year age difference would get along better since they would want different things.
You are wrong. They will fight over things they don't want simply so the other child will not touch it. And they will tattle on everything despite your telling them that if no one is physically hurt or about to be physically hurt you don't want to hear it. And they yell at each other
But then, sitting in the car, you hear a toddler screaming. So you yell at your older child to stop because you have heard enough screaming. Your older child simply says, "she was playing." Your husband says, "you need to stop touching her." Because they do that whole 'I'm not touching you' game. Your toddler responds by yelling at you since they were just playing. And for three whole minutes, the kids quietly play "dancing phalanges" in the back seat.
That is worth it. You may be thinking that celebrating your children ganging up on you is bad. But right now they are small and you will have a few years to instill a fear of parents. And the yelling stopped. Just enjoy it.