We should care more about getting incapable drivers to stop driving than detecting insobriety. We should want safety police, not morality police. And strictly

We should care more about getting incapable drivers to stop driving than detecting insobriety. We should want safety police, not morality police. And strictly on the morality angle, I don't think driving drunk is more culpable than driving over tired or over angry. I find those things are about as easy to detect in myself as drunkenness.