I hope, for your sake, that you have offspring who love you more than your money! If that is not the case, I hope for your sake, that your desire does not succeed! Existing in a nursing home with minimal care and less than minimal love from family is not the way to spend your last years! They are supposed to be ‘golden’ years.
The secular humanist liberals thought of that too. That's why there is state-sanctioned doctor-assisted suicide, even for nominally healthy people.