I think alot of it has to do with the mindset you have before you die.

A suicide is going to have numerous problems and will need to be helped by higher spirits, mostly because of the fact that he or she killed themselves to get the kind of release you are talking about (end of suffering).

If someone dies a severe atheist like I myself once was, they might not believe they are dead!!!

I hate to quote movies but think six sense.

Hi Asethaa,
I'm with Recoverer, that you think about these things is the best insurance to prevent you from being stuck. The important thing is, I guess, not so much if one has the "right" belief, but to be open for possibilities as well as the own healthy thinking like "Wait...what I'm doing here? This is not what I really want. I want to go elsewhere where it's nice..."
That way.

You know there are people who don't ask questions. All has become routine for them. Nothing to change. All is as it is, has been and ever be. That's the type of people I'm a bit concerned about.

And pleasant release of sufferings, I'm sure there's enough of it. Just think, what you now suffer from, it isn't there beyond the physical (as long as you don't want it to be there).

Spooky