@Frank Apisa,
Quoting Yoda without understanding context is a surefire way to fail in my book.
The Jedi religion is based on mashing up Taoism with the Christian philosophy. The series is popular because it appeals to its own internal theology (when we die, we become Force spirits).
You cannot quote Yoda and accept a godless universe with no afterlife. Atheism is the teachings of the dark side. The very people who convince us not to believe in life beyond death, because then we won't become ghosts to haunt them, and who don't believe it themselves because they can convince themselves that they can solve their problems by killing ppl they don't like.
But if Star Wars is any guide, Yoda didn't truly die. Neither did Han Solo.
Neither Ben Kenobi. Neither did Leia. Their ghosts live on. Especially since somehow they immortalized Carrie Fisher after her death (creepy).
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My point being, aside from someone abusing Yoda's "there is no try" is that there are a number of problems with a lack of afterlife (I don't think it's essential for people to believe in God. If God is God, he exists whether or not we believe in him, because he doesn't need us).
1. "I can get rid of people I don't like!" The last thing we need in society is psychopathy, and when people are convinced other people won't at least curse them in death, what's to stop mass murder. Oh sure, someone can kill you, but then you're dead and will never feel sorry for what you did.
2. "There is no justice." I was talking about the natural human need for payback after person with mentality #1 brutally murders your parents or children. Someone accused me of talking like it was the dark ages. Obviously they've never been a mother. Even losing one of your children, you hope the law will take care of it. But increasingly, the criminal justice system has a life sentence or three, yet lets them out early for good behavior. Your child is dead! Where was the justice if they barely served 10 years?!? And so, if there isn't a special place in hell for those kinds of people, there's no "coming to terms with death" as other ppl above me put.
3. "I'll never see him again." This is a offshoot of #2. Just as we humans need to see bad people punished (maybe forgiven eventually but first to learn their lesson), we need to see all those who came before us again. That grieving mother has peace knowing that her child is there, and she's gonna see him one sweet day. It's not important whether you think it's true. It's important that she thinks it's true.
4. "There's no point." Combining # 1, #2, and #3, there is a prevailing sense without a place for the dead to go, that nothing matters. If this is the case, then society breaks down. Why should I pay taxes or debts? I'm gonna die anyway so I mihht as well live it up. Why should I bother being kind to people? Etc? Pretty soon, everyone treats everyone else like crap, feeling that nothing matters. We have hell on Earth. Congratulations, you have finally punished that man who killed your child. By making the world so miserable that he would rather die. Or course, you would too. But anyway.