The socially and legally enforced acceptance.... of homosexuality
Please cite examples of the ways in which personal "acceptance" of homosexuality is legally enforced against people against their will. Name a single person who has been punished for committing a crime of which the only legal criteria is a negative or "unaccepting" view of homosexuality.
are both causes and symptoms of society decay.
No, this is yet another myth perpetuated by the right wing social conservatives. Society is not decaying, it is advancing. Just because you can't see it every day or, sadly, even within your lifetime, that doesn't mean it isn't happening (*cough* the evolution controversy rings a bell). Yes - society is improving.
A child born today has a lower probability of dying from homicide than at any other time of human history. Violence is down people (although there are occasionally short-term trends to the contrary - most of which are related to reactionaries who don't like that social norms are changing). The state is a fucking sideshow. What's really changing is technology and the way people interact and relate to each other. We are more tolerant than ever. We are more charitable than ever. We are more sophisticated than ever. Sure, there are groups who pose a roadblock to this progress (fundamentalists of various religions, for instance - Taliban, Southern Baptists, etc), but that doesn't buck the overall trend.
The claim that tolerance of homosexuality is somehow a negative influence on society is incredibly ironic. Those who propose that are the ones who seem to have no problem with a society that treats homosexuals as some sort of permanent underclass of untouchables. What is this, the fucking middle ages? Even young children are better able to grasp the concept of reciprocal respect and the fucking golden rule. It's the fucking golden rule! How is the further implementation of the golden rule leading to the decay of society? I don't understand how any reasonable person could reach the conclusion that it is.
I mean, has anyone who opposes social or legal equality for homosexuality actually realized that the thrust of their arguments are the EXACT same as those used by people who opposed the equality of blacks and women, or tolerance of other religions? It's not just a coincidence that the arguments are extremely similar!
It did not come from the grass roots. Its origin is the top-down culture creators who seem hell-bent on destroying Western civilization.
Oh yea, just like equal rights for women and civil rights for blacks - it's all just part of the super-secret conspiracy of the elite to "destroy western civilization" (even though any 'elite' would necessarily derive its power from the preeminence of western societies over the the rest of the world - don't worry, most attempts to claim that "the elites are behind it" aren't actually supposed to make sense). Yea. I'm a member of the Western Elite who wants to destroy western society and thus western power.

Do you really believe that?
Have you yet to realize that the elites can be blamed for whatever it is you don't like about society? Why is Ron Paul being interviewed on CNN far more often than any other loser of the 2008 Republican Primary? OHHH IT MUST BE A CONSPIRACY BY THE ELITES BECAUSE THEY KNOW RON PAUL WILL DESTROY WESTERN SOCIETY!!!!11
The mainstream view of history and the social sciences, insofar as it lacks an appreciation of the role of the elite in shaping history and culture, might not give an accurate representation of reality... but neither does the view by a bunch of cranks who claim the elite is responsible for everything. The elite exists but has a very limited about of control (and is also a very varied demography with many divergent and conflicting interests). The mainstreaming of homosexuality, while it may be co-opted by a particular faction of the elite to serve certain ends, is for the most part a result of the fact that there are simply quite a few homosexuals in society who are finally pushing for their right to be treated like any other sexual preference (which they should be).