Hell isn't what I'm afraid of, It's life. More specifically, A meaningless life. Because you can have nice feelings, and have kids, and live your life and then die but your life will have meant nothing. Your feelings would have meant nothing, and everything you suffered, everything you worked for, everything that mattered really didn't matter at all. And then you get to realize that any love you felt was just a biological impulse to procreate, and the love you have for your kids is programmed into you so you don't kill them as infants because they annoy you.
No, I don't believe in that world. You can have it, if it makes you happy, but I won't.