The truth is that no ‘gay’ gene has been found
A more significant truth is that all human males have a female X
chromosome in addition to a male Y chromosome and the relative
contributions from each may vary from one person to another.
However another factor behind male homosexuality may be the following.
Human babies and children require a great deal of looking after, so
its helpful for a mother to have a grandmother or two around to give a
hand.
This would have been particularly so in precivilised times when there
were no modern amenities.
Now, if grandmothers got pregnant they would be too busy with their
own babies to help young mothers, so the process of evolution has led
to human females having a menopause which makes them infertile. This
ensures grandmothers can be available to help mothers rear children
into strong and well trained young adults. This has helped human
societies survive, but as a side effect of menopause, by middle age,
66% percent of women lose interest in sex.
That means that if all men were heterosexual, the total number of men
who would want to have sex with women would be much greater than the
number of women who would be available.
In precivilized lawless times this would have lead to conflict between
males fighting over females and also to frequent rape of females. Such
internal conflict would have reduced the ability of precivilized
communities to survive.
Consequently, precivilized communities that compensated for lack of
sexually active females by having a proportion of homosexual males
would suffer less internal conflict and for that reason would probably
have been more successful at surviving than those that included no
homosexual males.
If this were the case, then the fractious communities without
homosexuals would have slowly died out while the more harmonious
communities, with homosexuals, would have grown and multiplied.
So, according to the above explanation, male homosexuality compensates
for the loss of sexually active women caused by menopause.
