What would you do?

I Do
Pedro the Lion

and when his tiny head emerged from hair and folds of skin
i thought to myself if he only knew he would climb right back in
i do
now that my blushing bride has done what she was born to do
it's time to bury dreams and raise a son to live vicariously through
the sperm swims for the egg
the finger for the ring
if i could take one back
i know what it would be

How do you decide what to do? What would you do? Why? Which one would you take back?