That is why I used the word 'unconscious'. They might totally be oblivious to that fact. As an ecologist, I prefer to look at things on a larger scale and sexual reproduction together with accompanying genetic recombination is one of the reasons all of us are alive. If we all have the same mindset. we can as well discontinue life. Perhaps there is a particular gene in you that might save humanity from a particular disease in future but due to your mindset, you refused to pass this gene to the subsequent generation? You have totally erased your gene from the gene pool without you thinking of it.