It seems that liberal Christianity is not the wave of the future that so many people predicted, as Charlotte Allen explains in her LA Times editorial: Liberal Christianity is paying for its sins.  [Please note that I know of many orthodox individual Presbyterian and Episcopal churches (and grew up Presbyterian!), so the following doesn't describe every individual church.]

What sins, you ask?  Some examples:

The Presbyterian Church USA, at its general assembly in Birmingham, Ala., was turning itself into the laughingstock of the blogosphere by tacitly approving alternative designations for the supposedly sexist Christian Trinity of Father, Son and Holy Spirit. Among the suggested names were "Mother, Child and Womb" and "Rock, Redeemer and Friend." Moved by the spirit of the Presbyterian revisionists, Beliefnet blogger Rod Dreher held a "Name That Trinity" contest. Entries included "Rock, Scissors and Paper" and "Larry, Curly and Moe"....

The Presbyterian Church USA is famous for its 1993 conference, cosponsored with the United Methodist Church, the Evangelical Lutheran Church in America and other mainline churches, in which participants "reimagined" God as "Our Maker Sophia" and held a feminist-inspired "milk and honey" ritual designed to replace traditional bread-and-wine Communion.

As if to one-up the Presbyterians in jettisoning age-old elements of Christian belief, the Episcopalians at Columbus overwhelmingly refused even to consider a resolution affirming that Jesus Christ is Lord. When a Christian church cannot bring itself to endorse a bedrock Christian theological statement repeatedly found in the New Testament, it is not a serious Christian church. It's a Church of What's Happening Now, conferring a feel-good imprimatur on whatever the liberal elements of secular society deem permissible or politically correct....

The result of incidents and positions like these is a drastic drop in the percentage of protestants in mainline churches from 40% in 1960 to 12% today:

Some of the precipitous decline is due to lower birthrates among the generally blue-state mainliners, but it also is clear that millions of mainline adherents (and especially their children) have simply walked out of the pews never to return....

Incidentally, why the correlation here between blue states and mainliners?  Did liberal Christianity lead to blue-state conclusions, or did blue-state thinking lead to liberal Christianity?  Or is there a third factor involved, connecting the two?

When your religion says "whatever" on doctrinal matters, regards Jesus as just another wise teacher, refuses on principle to evangelize and lets you do pretty much what you want, it's a short step to deciding that one of the things you don't want to do is get up on Sunday morning and go to church.

Read the rest of the article here.