Is euthanasia for humans legal everywhere?

I just saw a Facebook reel titled “Americans for prolife” and it was a lady talking about how Americans, devalue human life by advocating euthanasia. She was saying how it’s not healthcare. I am a veterinary technician, so I technically work in healthcare. Why is euthanasia perfectly fine for terminally ill, in pain, animal patients, but not for humans? It makes no sense! If someone is in pain, and terminally ill, they should be allowed to have that choice to peacefully pass away.
Is euthanasia for humans legal everywhere?
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