This is quite true.
As long as we have sperm in our sacks then we can always make more kids.
To go even further, purely from a nihilistic point of view, nothing really matters anyway. It's only our own moral compass that stops us from doing whatever we want to do. Morals are not an objective entity, they are forced on us by society through involuntary social conditioning.
That being said, I do still currently have a certain set of morals intact, though they are slowly being chipped away at by my inner demons and maybe one day I will have nothing left to restrain me..