Euthanasia – Nuances
If the question is whether one should try to achieve longevity, my view is yes. That’s because one of the value God gives us is “excellence” or “ahsan” that means maximizing value out of the available resources. So our life is a resource and a one of the blessings of God should try to maximize it.
Rejecting chemo can include a consideration of multiple factors in deciding whether one wants to receive this treatment or not. Therefore, the ruling may vary from case to case and it is not always an intention of getting killed early on purpose and with consent as done in euthanasia. Resuscitation however cannot be avoided just because someone has willed it so. These are both different scenarios.