Currerntly, if someone has an uncurable debilitating disease that is going to get increasingly painful, what are their options?
That's what hospice is for. As a former hospice nurse, I can tell you that there's never been a single patient we weren't able to get out of constant pain...and that's patients with a wide array of painful conditions. There are meds available for that and, here in America, end of life care is provided for via Medicare, Medicaid and there's even nonprofit hospice organizations that will take patients with no insurance at all....I worked for just such a hospice.
Before anyone asks or assumes, no, hospice does not give so much morphine that it kills a person...we just don't have access to the type of morphine that would "put someone to sleep". We do, however, have access to the kind of meds and morphine dosages that can get people out of pain and discomfort to such a degree that they are not suffering unto death.
What you see in the movies and carefully constructed propaganda is geared towards making the general populace believe that euthanasia is a wonderful thing and seemingly the only recourse for those with painful, terminal conditions but that's just a lie. It's just murder, plain and simple. If the patient wants it, it's just assisted suicide. If the patient isn't competent to choose it, it's just murder.
It's a very convenient way to work us all towards legalize murder of the elderly or handicapped individuals that family no longer want.