Well... See... I believe in Heaven and Hell... and it doesn't make sense to me that once a person died, his/her spirit would come back because... 1. why would they choose to leave Heaven? 2. why would they be allowed to leave Hell? That's what I don't get. And i know that i've never SEEN a demon or an angel... but others have experienced things that are sort of undeniably paranormal, you know? And some of them fit so nicely into the category of demon or angel, it's unreal.
I believe this is Heaven and Hell. It is perfect. It has everything, both bad and good. So it is your choice to see good and do good. Or the other way.. all your choice.
1. What if they don't even know Heaven is just on the other side.. but they didn't get to see it.. just too despair to see it. Eyes fill with grieve and tears to even see anything.
2. Who stop them?
Ppl has experience many things. Had you ever look at cloud and see things in them? Kinda like that. But we can also use that to our advantage. Like look at a bad situation and ask "what can I do to make this better?".
This is Earth, and we are it's Angel with power to make this Heaven. We have the tools.. we have the hands, legs, and especially brain.
We didn't built a latter that disappear into the cloud, but we did built a building that goes into the cloud and we put elevator in it.