There is no hell, no afterlife, no reincarnation. If just a very small ( 1 centimeter radius) piece of the brain gets damaged the human becomes brain damaged and becomes "someone" else. Dementia,alsheimers, lobotomy , diseases, a stroke, head injury, drugs, alcohol can also change the person. the brain generates thoughts, consciousness, personality etc. Humans are just machines imo.
For me it's very important to believe for me that Death = non-existence forever. Because only in non-existence forever can there be a guarantee of not suffering extreme pain ever. Pain can be so bad that it's unimaginable.
In non-existence there is no pain no suffering ever, no grief , no problems no work no cleaning crap all the time , i hate cleaning and chores and working too for what purpose? And i fear extreme pain, homelessness, stroke , cancer old age etc none of those can hurt me nothing can after Death because there is nothing after Death only non-existence foreever and to me that is the ultimate relief no pain i hate pain and suffering