I would disagree with your premise. LastPass get hacked you hear all about it (this thread being a perfect example). You also then get group minds chasing solutions and spotting issues.
If you get hacked, you wont even know, and when you try to figure out how your genius security solution was foiled, you are on your own there too.
The only way your data is safer is in your mind, which is the first mistake of security; you dont get hacked because you knew about the weakness, you get hacked because you didn't.
PM's are, in most cases, a lot more advantageous for many reasons. But you can't really compare the solo solution at all, imo.
If you get hacked, you wont even know, and when you try to figure out how your genius security solution was foiled, you are on your own there too.
The only way your data is safer is in your mind, which is the first mistake of security; you dont get hacked because you knew about the weakness, you get hacked because you didn't.
PM's are, in most cases, a lot more advantageous for many reasons. But you can't really compare the solo solution at all, imo.