To be honest, the worst thing about parenting in general is other kids' parents. Who knew raising children was a social minefield?
So your kid wants to go to a birthday party, a staple of happy childhood memories.
Which is cool because you know they have the best BFF in the universe and you could use a child-free afternoon.
Oh shit, the RSVP says "Parents Welcome" which is code for "Socially unacceptable to kick them out of the car as you drive by."
Which means...two hours in an enclosed space with other parents.