Yep, if you don't want to reproduce..., but we are born to to start another life ... If everybody (animals, flowers etc...) had the same view of reproduction like you described, "because here is millions of the same species," the whole planet will die, couse here will not stay someone who will have child... ... children are our future, we need them, that is my reason for say, that homosexuality is versus law of nature.
Your opinion is right in case that the other (which is now more in population) want to proliferate, otherwise life on Earth has big problem.