I am 30, I am an evangelical Christian, and I don't drink. Not because I have a problem with alcohol abuse, although I enjoy a good sobriety story as much as the next person. My narrative is a bit more jarring, coming across to fellow liberated evangelicals as a throwback to our not-too-distant conservative past. In a culture that encourages us to celebrate the good things of life—Instagramming an artfully arranged salad, tweeting about Pinot Noir, posting Facebook albums full of vacations—choosing not to drink carries a stigma of pietism, a whiff of refusing to party with Jesus. A faith built on meaningless acts of righteousness, of disdaining the world and its evil values.
In the pastor's home I grew up in, alcohol was a nonissue: not a drop in our house, only grape juice in the Communion cups. Save for my mother's relatives—who served as a warning, since most of them abused substances at some...