The human race would be wiped out!!
Same thing with abortion....
Indeed, it’s easy to berate against people who do not like homosexuals when one has money and no problems. However the day the state becomes strong enough to impose its prefered lifestyles, these people will be the first to cry uncle and be like: “ and then they came for me but no one was there, so I had to become gay”
It’s not until you are truly defenseless that one can make true arguments, and if the Earth was completely gay, it would be a good way of starting to imagining it.