Hackers often set up "man-in-the-middle" attacks on unsecured airport or coffee shop networks to intercept your unencrypted data.
This provides a critical second layer of defense even if a hacker manages to steal your password.
“Many users will use various methods of communication from their mobile devices without knowing how secure those methods are. If sensitive information is transmitted and it's not encrypted, then a hacker could easily intercept it.” Sieve Networks
Community discussions often echo these concerns, particularly regarding the deceptive nature of modern phishing.