Is heaven whatever you want it to be?

^ If you haven't read the book, I heartily recommend it.

Oh, I wasn't aware there was a book. Thanks for the tip

The film's based on the book, I liked the film but the book is pretty mindblowing.

To bow and sue for grace
With suppliant knee, and deify his power
Who, from the terror of this arm, so late
Doubted his empire—that were low indeed;
That were an ignominy and shame beneath
This downfall; since, by fate, the strength of Gods,
And this empyreal substance, cannot fail;
Since, through experience of this great event,
In arms not worse, in foresight much advanced,
We may with more successful hope resolve
To wage by force or guile eternal war,
Irreconcilable to our grand Foe,
Who now triumphs’, and in the excess of joy
Sole reigning holds the tyranny of Heaven.”
Farewell, happy fields,
Where joy forever dwells! Hail, horrors! hail,
Infernal World! and thou, profoundest Hell,
Receive thy new possessor—one who brings
A mind not to be changed by place or time.
The mind is its own place, and in itself
Can make a Heaven of Hell, a Hell of Heaven.

I don't think there can be a place of eternal bliss. Given eternity, everything that can be achieved, will be achieved. Why would you read a book now, when you can lie down and wait another 70k years? And interestingly, even when you have achieved all that can be achieved and repeated it a billion times, you would still have an eternity left to spend on something. At some point you'll be suffering boredom so badly, you'd wish you were still mortal for that'd be one way to escape.

On the other hand, if you simultaneously had hell, just how evil of a human being would you need to be to be truly in bliss while there is even one person anywhere suffering eternal agony? So either the person in heaven is suffering thus falsifying the idea that heaven is a place of bliss and bliss only, or the person in heaven isn't really the same that used to be on earth and to have compassion and consideration for others.
Heck, I'd not even be happy with people like Hitler in hell. Let's imagine every life he and his followers have terminated, crippled and every soul they have tortured and let's imagine all the people who's lives were ruined or at least affected by that. Let's imagine all those people and three generations of their descendants, how many would we be having? A billion people? Two? Let's be barbaric and repay Hitler all the suffering he caused not just once but a trillion times. Two billion trillion lifetimes of the worst imaginable torture. And he has yet eternity of the same ahead of him. When is enough ever enough? And who else will be down there with him, suffering the same punishment for... I don't know, raping a dozen children? Even if we were so monstrous as to grant the worst of our fellow primates this kind of afterlife and say it was fair, how much worse do we have to be to grant it to the second worst or the third worst in exactly the same amount? Would it really be us who are in heaven meanwhile knowing it and being happy about it? Or would our morals be changed so much that we'd hardly qualify as 'us' in that sense?

If there is no hell, the prospect of a heaven is obsolete. Why would there be a heaven for all people to go to and be happy despite some humans still living and suffering in the real world or for all people but not for all their favourite animals or for all people including an eternity of coexistence with those they hate most? That, too, renders heaven a place of as much bliss and suffering as our reality is, except it never ends. And if hell exists and we're okay with it, then whatever it is that gets to go to heaven isn't really us and we might as well not try getting there because we never will.

Of course no one of us knows wether it exists or not or how it is, but you only need to consider so few details to understand that its not worth wasting time on striving for.

yeah theres some b side aqua teen episode where master shake and frylock get tired of the endless free pizza and virgins and try to re animate back on earth. endless bliss sounds kinda ...