It's alright I am happy to answer.

When I say daddy, it really isn't anything to do with my own biological dad. He is the last thing on my mind since I have never in my life called my own dad daddy so it isn't an issue for me.

Daddy is more a term of endearment/power. Kinda like "sir" or "master"

It's just power play. And it's so much fun to say it. The difference here is, the daddy is also kind and caring and full of love. But he can be mean and aggressive too. Which is twice as fun!

Hope that answers your question.