1. People would be happier because they know death is only a transition.
Rather depends on the nature of those possible afterlives. I've read a description of the film, it doesn't go into too much detail about what the nature of this afterlife is, just that there's been proof of one.
2. People would be more moral and ethical because someone is watching and keeping records.
Again, rather depends on the nature of the afterlife - doesn't have to be a Watcher.
3. People will focus less on pleasures here and more on their duties and responsibilities.
Why? Part of the 'duties' we have here are about prolonging our lives and the lives of those around us, because death is a threat. If death is not a threat, just a step onwards, it becomes something not to be feared. Maybe the adrenaline junkies go wilder, knowing that there's no ultimate consequence?
4. Scientists would stop philosophizing and giving their opinion on religion and spirituality. Dawkins would be somewhat depressed.
Are you kidding? If someone could prove an afterlife, the scientific community would be crawling all over the topic trying to find out what they could learn about it. Scientific work in the area would explode!
5. No one will bother about the cosmos and galaxies, big bang, exo planets etc. Better things to do.
Just like they've given up on geology because of cosmology and quantum theory?
6. Similarly with QM, evolution etc., though genetics and medical science would still be fairly relevant.
Really? How does this new form of life, this new region, this new way of being fit in with quantum mechanics, what does it tell us about the fundamental forces, are there new dimensions or fundamental forces at work? Does life in the afterlife 'evolve', how do earlier forms of life in this world reflect in that world, what does that tell us about them and us?
7. Crime may come down for fear of the after-life.....because the after-life does not mean only 'heaven', there would be a 'hell' too. Some NDErs have said so.
Serious crime might go up, as the death penalty suddenly isn't so consequential to some, and killing people isn't quite the taboo it used to be. Other crimes might go down, as people aren't so materialistic, knowing that they really can't take it with them?
8. Generally, priorities will change dramatically, and lifestyles will change...though some people may still be unable to control their base animal instincts.
Maybe, maybe not. A lot of people would not believe - recall, there's scientific 'proof' of climate change and evolution, and we're still struggling to get that to stick in some place. Of the ones that do, there will be a range of reactions.
O.