What does this have to do with morality?
I think it is a legitimate question. According to Christian doctrine you are going to spend eternity in heaven if you were a good guy. But what are you doing there all this time so you're not feeling bored?
Everything good to my heart's content.
What does this have to do with morality?
Everything. That you think that acting in a moral way, and living eternally in a moral state would be boring shows that you think immorality = fun.