Wow. What a murky, and passionate, topic. Let me try to be succinct.
I am for assisted suicide, right to death, and other phrases/jargon that means "While I am now in my right mind, I no longer wish to live and experience this pain/dementia/disability that leads me to feel my quality of life is so low that even ice cream cannot solve it." While I wish and hope that people with full mental faculties and a future (physical disabilities, depression) would seek counseling for a good long time (amorphous time frame) before choosing such a path, I can understand why a person would want to end their life. Being an atheist, I worry that people might believe a "better life" awaits them and choose to die sooner than if they did not believe that option, but as a biologist I think the instinct to live (fear of death) keeps the numbers on both side of that messy divide pretty even.
That totally was not succinct. Right to death: yes. Assisted suicide in cases of terminal illness, dementia, yes. Assisted suicide in cases of depression, loss, physical disability, I don't want to take their choice away from them, but I want them to be strongly counseled to try therapy first.
The idea that it is or would be or could be "illegal" to commit suicide is preposterous. Whom exactly does one fine in that case? The legality of the situation means little. The "what would happen to them" has already been processes, digested, discarded. NOT being a psychologist I would still argue they believe their families would be better off. I don't want that to be a factor in their decision, but that takes counseling. I believe if faced with a painful life-altering/ending disease I might choose to end my life. But, only after I could no longer enjoy ice cream. I'm not being flippant either. There have been some dark days, when the fact that I could have a Blizzard, has been that absurd reason to not do anything stupid. To each their own.