I think its because you never made a purchase on that account. Its addressed somewhere on the ps blog.
You will only be able to change it on the spot if you've purchased something from them in the past otherwiseeeee, you need to wait for the email to change your password (.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.