The Christian view of anything in life is warped to cause guilt, fear and obedience to their religion above all else.
There is no mention of suicide in the bible, either pro or con. Suicide is a personal choice and when it comes to the end stages of life for a patient suffering in constant pain, it is surely a viable alternative.
John Edwards (psychic) and Edgar Cayce (the sleeping prophet) both state that suicide is NOT the bet alternative for those who are in distress during their life times, as we all are at times. Once it is done, there is no "taking it back" or "do overs". Those who do commit suicide go to the same place as all others who pass on from this life - back to the universal "whole" to take their continued presence there. The essence of our beings are "energy". Energy feels no pain and cannot be destroyed or punished.
These old beliefs and concerns for one's souls need to be brought into the light of the present so we can live our lives as intended: with love, compassion/empathy for others, a sense of well being, and a quest for knowledge, instead of binding our minds, hearts and souls to the long dead past.