They're designed to trick you, so I don't think any population, no matter how sophisticated, should trust themselves to correctly identify malicious websites 10

They're designed to trick you, so I don't think any population, no matter how sophisticated, should trust themselves to correctly identify malicious websites 100% of the time. Additionally, some sites may potentially contain exploits that run as soon as you visit the site (vulnerabilities in plugins like Java or Flash, drive-by downloads, etc.) in which case it doesn't matter if you correctly identify the website as malicious and hit the "Back" button - it's already too late. Much better to avoid loading the content at all, which is exactly what is achieved with SafeBrowsing.