(with the caveat that evangelism needs to be done well...)
There's this great piece of logic Ben used to convince me to get the WonderMutt:
We need a dog, and we have a home. He is a dog, and he needs a home...
So this is the church's role as regards postmodern culture: we know Christ, and we have a spiritual home. They need Christ and a spiritual home.
You do the math.