I have a very deep understanding of market history. But that does not make me qualified to know what will happen in the future. You don't know the future either, respectfully.
Again, I recommend you read Black Swan book which I had mentioned earlier. It'll perhaps help you realize that having an allocation in safe assets are necessary
Oh, one more thing: bonds help when there is deflation. Now you may say that there is bound to be more inflation and not deflation, but how do you know for SURE? Do you have the humility to admit that you don't know what you don't know?