Humans are social animals. Inducing shame and discomfort might be useful if the believer is isolated away from other believers and cannot rely on them for emotional support. If not, he or she will likely relieve their shame by seeking the company of fellow believers, reinforcing the affiliation with the believing group.
Or they'll give up their belief to avoid looking like a nut. I know several Christian fundamentalists who've done just that. Unfortunately, since 'moderate' or 'liberal' religion is still respected, they just became Christians of a different type instead of atheists.
How exactly do you expect to make humanity acknowledge the ridiculousness of religion if you yourself continue to act as if it was a respectable position?
A monthly thread for posting rationality-related quotes you've seen recently (or had stored in your quotesfile for ages).