Have had many similar moments. Other day at Trader Joes we were going through the isles getting items we needed and then saw a mother with 4 children (all looked to be under the age of 6 - one was an infant) in tow...she looked so exhausted! Her cart was piled high and the kids were all screaming and pulling at here. We looked at each other and did our usual joke: "So, what..60?" and the reply is always "No, I told you 80!" Sigh...it is SOOOO wonderful to be child free and VERY much plan on staying that way!
Also, pretty much anytime we just want to go somewhere, a walk, to the store, etc. we can just, well...GO! No packing up kids, snacks, hauling them to the car, getting them into car seats, driving to the place with them screaming away. Getting there, unloading, having them bug you for everything...NO THANK YOU!!! Love just being able to have the freedom to at a drop of a hat go somewhere with no fuss or time involved...Yeah for being child free!!! :D