I fell very sorry for you that you seem to dismiss the concept of account security and your responsibility. Nobody ever flew four aircraft into two office buildings in New York prior to 2001, yet it happened. So citing that your accounts haven't been breached in five years is irrelevant.
You have the ability to secure your accounts, be it for PlayStation, Twitter, Instagram, whatever. It is your choice as to how to proceed. Either you take proper security measures or you don't. I think you know what will happen if you don't.
And yes, there are many people here claiming hacking. If you spend some time here responding to these people you'll find out that most did like you, use the same password across multiple logins, or shared their login info to steal games or get boosted, or used a simple password. None of this has anything to do with a breach of the PlayStation Network.
Ultimately its your choice. If you have concrete proof that the PlayStation Network has been breached then post it. You'll be helping everyone.