"Mankind" does include all humans, male and female of all ages. You can always use a different word if you prefer to, but please don't claim that e.g. Neil Arm

"Mankind" does include all humans, male and female of all ages. You can always use a different word if you prefer to, but please don't claim that e.g. Neil Armstrong did or wanted to exclude women or children when he said his walk on the moon was a giant leap for mankind.