Interesting. I have never been asked that, so I had to think on how to answer it.

It is not being aroused--though that can be a part of it--but a lot like being aroused some things seem a lot more appealing than they would outside of that mood. When it is right I become hyper focused on what I am doing and I can feel what is going on with the slave. It is properly a power exchange that I feel the submissive has given me.

Imagine that feeling of one of those days where you are just on and everything is going right and you can do no wrong, you feel invincible. Now intensify it for an hour or two. Of course I have to keep a little in reality, but it is a suspension of disbelief where the spell can be broken.

If the submissive tries to tell me what to do during this "spell" it stops being fun for me and then feels like a job.