We always find ourselves at the park. The ' supermarket ' park as you have labeled it. It is as big as a supermarket!
M and D always run around with you like maniacs. We jump off of stuff, climb up stuff, crawl under stuff, bang our heads on stuff, and generally do all of the stuff that some (most) other parents do not do. We go the extra mile even though when we wake up (especially D) our backs hurt, our knees hurt, our bodies hurt - we do it because we love to play with you/run with you/relieve our childhoods by playing with you.
And then...
Daddy, I met little so and so and her friend so and so - can you wait her while I go play with them. Really!?!?!? Seriously?!?! I get it. I understand. I was kind of upset the first time it happened. I felt not needed, well I guess for now you still need me to drive you to the park. It is a sad and funny and exciting and liberating and and and and an entire mix of emotions. For now you always come back and play with me more, yet I know the day is coming when I will bring a book to the park and be forced to talk to the other parents who are regulated to watchers. For now - I need another few years of playing.