What happens is that you become a disembodied mind drifting invisibly somewhere in the dim, dusty, dark matter-cluttered cosmos. The contents of your once embodied mind survive death, and whatever was there at the moment of death is all you will have for the 1000 year duration of your disembodied existence.

What is the upshot of this situation?

Whatever you had when you died is the cud you will be chewing on for the duration (which is 1000 very, very slowly passing years, after which you abruptly dissipate (because god is slightly merciful). No, you will not meet god. He has his own problems to deal with. No devil, no heaven, no hell, just whatever was between you ears when you dropped dead.

I advise this:

Get busy and start reading as much as you can! Listen to as much music as possible, see as many movies, have as much sex, eat as many delicious foods, etc. as you can. in other words, load up with as much baggage as you can hold because you will be taking it with you. If you have filled your mind with crap, then that is what you are going to be thinking about for 1000 years.

There are no bookstores, media outlets, fine restaurants (or bad ones either), or sex organs after death. You will not be able to fill the tank once you are dead. No conversations allowed, either. (No mouths to speak, no ears to hear, no telepathy either, just in case you thought you'd be able to tap into somebody else's supply.)

I was informed that there are a lot of disembodied minds out there absolutely desperately craving SOMETHING to think about. What would they give for a sleazy tabloid or the worst novel ever written! Anything!

BTW, if you think existence is pointless now, just wait! If you have a sour, negative outlook, you would do well to get into attitude class pretty damn quick. 1000 years is a long time to be peeved.