Technically, if there even IS life after death, we would've known about it because then that means we were in a life before our current lives right now.
Therefore, since we cannot recall ANYTHING about before we were even in the womb (I actually, by some miracle, know what it's like in the womb. It's dark, and boring as stuff.), we have had no life after death.
Not existing or being dead is simply absolutely nothing. You cannot think, you cannot move, you cannot exist. Your body exists, but your mind is gone.
This is really hard to explain, but basically, you don't think, you don't move, you don't do anything. You can't even have any memory of ANYTHING.
Probably being dead will get you Heaven or Hell, but hoping you are Christian or Catholic or suchever, you are going to Heaven.
Except the Satanics. forget them.