I am the youngest in my family. Both my older brother and sister are adopted. Doctors told my parents that it would take a miracle to have a child naturally…well miracles happen because here I am!
If you already have children spend your energy on raising them and being the best parent. No sense obsessing about something that is out of control.
If you don’t have children I would seriously consider looking into adoption. You are truly performing a mitzvah and saving a life.