Rod Dreher's recent essay, "Sex After Christianity" is a must read (Sex After Christianity).
Dreher points out that
The magnitude of the defeat suffered by moral traditionalists will become ever clearer as older Americans pass from the scene. Poll after poll shows that for the young, homosexuality is normal and gay marriage is no big deal—except, of course, if one opposes it, in which case one has the approximate moral status of a segregationist in the late 1960s.
Gay marriage signifies the final triumph of the Sexual Revolution and the dethroning of Christianity because it denies the core concept of Christian anthropology. In classical Christian teaching, the divinely sanctioned union of male and female is an icon of the relationship of Christ to His church and ultimately of God to His creation. This is why gay marriage negates Christian cosmology, from which we derive our modern concept of human rights and other fundamental goods of modernity. Whether we can keep them in the post-Christian epoch remains to be seen.
Equally important is Peter Jones' response to Dreher's essay (A Response to Rod Dreher). Dr. Jones contends
The homosexual agenda is silencing every memory of behavior, speech, religious conviction, and public policy that reminds people that heterosexuality is the God-created norm for human sexuality. Anyone who adheres to such a heterosexual norm dares say so only at the risk of being arrested for discriminatory bullying.
This old Western "Christian" world is indeed "coming apart" and in its place rises a "new world" of multi-sexual liberation, systematically promoted by both an ideological pagan Oneism and a determined elimination of the binary structure of theistic Twoism, which Scripture teaches is the way the world was made. Many in evangelicalism fail to see or refuse to see what is going on. Their superficial solutions only compound the problems.