There no afterlife. I have a family member that was MURDER. In a country like Communist Red China with 1.4 billions people nobody care if a normal citizen died, police don't give a shit nor care to track down who the killer is. Not just my family members, tons of people got murder in China, India, etc.. and guess what? NONE come back (in spirit/soul/ghost form) and tell the police who the killer was. Nor come back in dreams to tell their spouse, nor give their spouse a closure.
1). If there is an afterlife, I know my cousin will come back to tell her parents who the killer is. She didn't want to die, she got murder, she was enjoy her life with her husband and children. If you was enjoying your life, and someone kill you, you be a damn angry ghost and at least go tell the police who your killer is to get justice.
2). You want your parents to have closure, not only your parents. But your spouse and your poor children. If there was a spirit form. My cousin will come back in dreams to tell her husband or children or her parents who the killer is.
3). You want your body to be bury. Not rotten somewhere with maggots and decompose, again, you were murder. You were unfairly have your life taken away from you.
And guess what? NONE. NONE. NONE ever come back in dreams to talk to their parents/spouse/children tell who their killer is, or at least tell where their body is so their bodies can be found to be bury. Or at least give hint of who kill them so the police can track down those serial killers.
Guess what? Serial killers are still out there killing even more people, and NONE ever come back in spirit form.
There no damn afterlife.
And guess what, the airplane that was crash in Malaysia wasn't it, hundreds of people burried in the ocean, guess what? Even till this day nobody know where that trace of airplane is. IF there is an afterlife, spirit, soul, yada yada, those hundreds of people will at least come back in dreams or show signs so people can find the airplane.
Afterlife, soul, afterlife yada yada are just things that human made it up to give them COMFORT, due to human nature they afraid of death, therefore they still want to live in the "afterlife" form even after they already dead.