Re: On a Philosophical Note
Hubble actually brings up that same point, immediately after the quote I presented.
Nevertheless, the atmosphere of scientific research--the disinterested curiosity, controlled imagination, and passion for impersonal tests--is by no means unique. It may, and often does, produce a definite influence in those fields from which scientific technique is barred. That influence, the man of science likes to believe, is generally beneficial. The special methods of science will be discussed hereafter, but they are characterized by the remark that research attempts to discover laws and to explain the laws by theories, the ultimate goal being the understanding of the physical structure and operation of the world in which we live.
I tend to interpret this as saying that whatever science learns about homosexuality (to use your example); its frequency, distribution, causes, or effects, have absolutely nothing to do with whether or not it is desirable or an "abomination". That lies outside science altogether. I further submit that this understanding can be extended to all the social and behavioral sciences. The questions we want answers to may have nothing to do with science.
I'm sure there is a chemical or glandular basis to love, and connections to our psychology, biology, sociology, anthropology, even our economics and politics. But to someone in love,or suffering from unrequited love, it may not matter one way or another. And science can't help you.