I think
Rashômon would have been a more apt example. From what I remember of
Run Lola Run, the gimmick wasn't so much the same story seen from different perspectives, but rather that Lola was somehow able to undo past mistakes, resulting in a better reality than she originally existed in.
I would

The universe is expanding and growing darker because of it. Also don't astrophysicists predict there will be a time in the far future when all of stars will have burnt out?
Sorrow for the lost Lenore
I tend to agree. All talk about some survival after death (whether it's heaven, reincarnation or some other form of immortality) stems more from a fear of death rather than some rational determination that we do not truly die. A healthy fear of death is a no doubt good evolutionary trait which keeps most people out of all manner of dangerous situations. Without it, most of us would probably be dead before we were 20. Like all good things, though there is a down side. Fear of death leads to a frightening and depressing contemplation of our own (and our loved ones) mortality.
Death isn't the least bit pleasant, clever or desirable but that doesn't automatically make it impossible.
When the power of imparting joy is equal to the will, the human soul requires no other heaven
-Percy Bysshe Shelley
ETA: Oh and welcome!