> ...if you're primarily concerned with security. Most people are not.

Obviously. Most people also were once not concerned with basic sanitation at hospitals, or with avoiding lead paint, or avoiding giving their kids alcohol to help them sleep.

The evidence these things were really bad came decades before public behavior changes.

Humans are so tribal that most will put fitting in and social norms before objective evidence to the point of killing themselves, and even their kids, so we should never assume the popular choices are the least harmful and well informed ones.

It is an evolutionary advantage that some of us do not weigh social norms so much.