Death

What is death? does anyone really know? i mean you cant actually die then come back to life.we all think that it is a world were all you have to do is have fun.is it really like that or is it just the same as the life we have on earth. is it worse..................
religiously we were taught to believe that its wonderful but what do they know its not like they could tell us about it even if it did happen. they might not realize it.