I'm not a fan of one-sided appraisals of complex topics, but since we have the other side represented here - Beliefs in an afterlife - the problems? - this one is being created to balance it. Note that the nature of and belief in the afterlife is quite heterogenous and the below represent generalizations that may or may not apply to a specific framework.
Some of the benefits of belief in an afterlife for the living:
- Alleviating Fear. Death represents a big unknown in our lives - it is something we often fear. Telling narratives about death, including though not limited to what happens after we die, help us as a species to cope with fears and anxieties surrounding death especially for the terminally ill. It helps us live.
- Alleviating Grief. If you've ever lost someone who has meant the world to you, you know how hard that is to deal with. Even if an afterlife isn't real, believing that your beloved continues on in some form is a tremendous boon to the bereaved. Again, it helps us live.
- Honoring our Ancestors. Connecting to the past is important for cultures worldwide, and our fallen ancestors often play a role in making those connections. Tales of afterlives can bring vibrancy to these tales and help us celebrate who we are and our culture. It brings together the living.
- Instilling Responsibility. Some cultural narratives about the afterlife emphasize how our behavior in this world impacts that across the veil. So in addition to being held accountable for our actions by the living, we are also held accountable once dead. This doubly encourages us to be responsible!
- Psychopomps and Mediums. Embracing the idea of an afterlife creates a space for experts who help guide both the living and the dead along the journey. In cultures where they are respected, they serve as advisors and counselors who help us reconcile with death.
- Instilling Purpose. Accepting the idea of an afterlife often allows us to create the notion that our lives are going somewhere or adding up to something. A sense of purpose is a very important motivator while living because it brings our lives focus and meaning.
There are no doubt quite a few more, but are these enough to consider such beliefs as beneficial and helpful?
I've already had an experience with death when just a child, so have no fear in the "death" of the body. I know what to expect.
Grief is all about oneself. It is ALL about missing someone important in one's life. People need to toughen up and accept the passing of a loved one and move on. Think of it this way:
When mulling this question over while meditating one time, God gave my soul a viewpoint overlooking the earth. Watching all the people below endlessly connecting with people for a while and then moving on to connect with other people, over, and over, and over... And also seeing all the departing souls leaving earth, going to judgment, with most being returned to earth for another life cycle. Watching an endless cycle of people constantly in motion coming and going into each others lives. And that is the way it is. So one needs to come to terms with that and learn how to move on. The past is the past. Grieving about it will NOT bring it back.
Yes, we are here on earth, the physical realm, to learn the spiritual lessons given to us so we can spiritually evolve enough to pass God's judgment and enter "Heaven", the spiritual realm. There we will continue to learn spiritual lessons and evolve thru-out all eternity.