My response;
How do you handle death being the end?
It's something of a relief to me. I won't be around to worry about projects left incomplete or things not done once I am gone. The sense that there is some great finality to the presentation that is my life is nice now that I've gotten over being told there would be otherwise as a child.
Seriously, what's the point in living?
I don't know about you but I enjoy what I do and further enjoy it when it's helpful. Books, movies, video games... most things, really, end. People still enjoy them and I'm treating life the same way. I'm enjoying mine while it lasts.
Why be good if there is no Hell?
I don't get off on other people's suffering and to the best of my understanding, including some understanding of computer models, cooperation works better than trying to cheat everyone. So, I'm good because it's the sensible course of action. I don't need a negative incentive when there's already positive ones and all of this being on top of Humans being a social species such that most of us can share in the joy of others, especially if we have contributed to it.
You seriously don't understand God.
Well, if he's got the powers you describe him as having then he doesn't want me to understand. How am I meant to believe in an entity with perfect ability to hide from my perception? If it's so important that I believe in him maybe you should tell him he's won this hide-and-seek game and he can come out now.