Yes I have. I'd have to say it's a grey zone, I've tried summoning them and nothing happened. But yes I read the 'Book of the Sacred Magic of Abramelin the Mage' and there are spells and demon summoning rituals in there that I would never want to perform!
Yes, its one of my favorite Grimoires. I don't believe in literal demons although I believe energy could manifest itself in a form we expect it to (such as demons described in the book).
No. Although some Java programs have daemons.
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.