I think that route is unpopular because we no longer have a sane relationship with death as a society. Religion, at least in theory, should help, but rates are declining there too. We'll pay any price to avoid the inevitable. We'll spend hundreds of thousands to get one more year of poor quality time with family, yet neglect to spend that time in better quality when health is taken for granted.

If you had no family, you could save many more lives for cheaper and easier to treat sicknesses, plus donating your healthy organs.