i have this conversation often with as many people as i can. ive spent a huge part of 20 years obsessively studying global religion and philosophy both ancient and modern with the focus on the afterlife. currently i dont believe its limbo but if thats the case im good with that. no matter what Im not coming back to this shithole 

 I give unimaginable joys on earth: certainty, not faith, while in life, upon death; peace unutterable, rest, ecstasy; nor do I demand aught in sacrifice. 

 Whoa. Is earth so bad?

I bought a book by Bruce Grayson about Near Death Experiences, but have yet to get to it. Do you know the book?  

 The answer to your first question is 'yes' 
I havent heard of him but NDEs are one of my favourite topics. The 2 groups I find fascinating is when it happens to atheists and people who have been blind from birth. 
And hearing the differences about the experience from people of different religions is just incredible.