This has so many Grey areas .
As a Christian I would not do it. In the 10 commandments it says " thou shall not kill " this is murder and suicide.
In Gods eyes murder is murder whether you kill someone else or yourself.
For me and I'm speaking only for me. Jesus suffered terribly even as he carried his Cross and I have to carry my own cross
I'm in constant pain and it's my belief in God that keeps me going
Time on earth is so short compared to eternal life. If you don't get it right in this life you won't have eternal life.
I do however believe most people do have a choice as to whether they want to end their life or not.
In saying this the person needs to be of sound mind and at least their doctor and 2 other doctors need to sign off on it plus another person of authority.
Today you can be in pain and then it can change.
I had a friend who was 10 weeks pregnant and was bleeding bad . The doctor told her there was no way the baby would be alive with that much bleeding. They put her in hospital for a curette and last minute the nurse agreed to bring in a machine to check if there was a heartbeat. And there was , to cut a story short she went full term with no further problems and gave birth to a healthy boy. If it was for this nurse , my friends baby would have been aborted.
Sometimes we don't and can't see how something we feel won't change can actually change.
If a relative or close friend decided to end their life like this, I wouldn't help them do it but I would be there with them , holding their hand and praying