Inspired by (but not a TAAT!) a thread where OP is considering a second child at 45 ...
These threads pop up with some regularity on MN and one of the arguments against having a child at 40+ is you'll either be dead by the time your grandchildren are born or you'll be too old and decrepit to run around after them.
Whilst I accept it must be lovely to have involved grandparents, AIBU to think they are not essential to a child's happiness and well being?