There was life before children?
DD1 was born 10 months after I graduated college- before I had children I was a child myself!
I don't miss being single and lonely, or being a broke college student.
With teens, I can get sleep, I can go to the store spontaneously, etc. Lots of the inconveniences of having babies are already over for me.
The only "s" I miss is my skinny waist!