I wonder, do you feel even a little bit sad—does your comfort and happiness get even a little bit interrupted—when you think about all the poor unsaved people who are going to burn in hell for all eternity? Do you have a spouse or children, or other close family members, perhaps? What if your brother, or your spouse, or one or more of your beautiful kids rejects Christ and goes to hell as a result? Do you imagine that you'll ever be fully happy in this lifetime knowing that your apostate family members will go to hell when they die and you'll never see them again? When you die yourself, do you imagine you'll be able to enjoy the paradise that is heaven when you know that somewhere else your loved ones are in agony, being endlessly burned and tortured? Or suppose every single one of your close family members gets into heaven; what about the mailman, or that nice lady who works at the grocery store and always has the sweetest smile and the most cheerful "hello" for you every time you meet? I sure hope heaven is far enough away from hell that the tortured screams of agony won't spoil the pleasure of your perfect paradise. But something tells me the damned will never be too far from your mind whether you can actually hear them or not. Unless God somehow erases your memory of all the people you care about who are burning forever. That would be totally awesome, right?
And don't forget, you're going to live for eternity. Since God knows everything there is to know and can do anything there is to be done, it means there are a finite number of things to do and know. Eventually you will do everything there is to be done, and learn everything there is to know and you will be bored out of your mind. There will be no more room to grow or change and you will be, by definition, dead. Only you won't really be dead. You will wish for death, but it will never come—not in a hundred years, not in a billion, not when every last star in this universe has burned out. You will never die. Great, huh?
Yeah, heaven sounds like a swell place, and not at all like a fate worse than death. It must be very reassuring to know you'll spend eternity there when you die. Where do I sign up?