Going gently or at least when you want

Some days ago I read an article (here) reminding me how little freedom we have in some areas.
Here is the first paragraph:
"ON JULY 10th two people died whose lives, though long, were shortened by design and with others’ help. Sir Edward Downes, a British conductor, and his wife Joan had travelled to Switzerland, where the law on assisted suicide is the world’s most liberal. He was 85, partly deaf and almost completely blind; she was 74 and had terminal cancer. Holding hands and watched by their son and daughter, they drank a lethal dose of barbiturates and died."

And to know that I will not be able to end my life when ever I wish feels like a tremendous lack of freedom to me! Of course as long as you have freedom of movement noting can stop you from going to a shop to by barbiturates or even jumping from a high building of a cliff.

But that we live in a society where, even though you have all your head and you clearly decide to end your life, you are not allowed to do so (except in Switzerland and few other places) is incredible.
Is it the in heritage of our judeo-christian culture?