Maybe you will be blessed to experience some of the same 'compassion' you are so willing to dispense upon your fellow man.
Spare me the theatrics.
From a public policy perspective, the problem with your pro-euthanasia views is that they ignore the very real threat of someone being killed against their will (or merely without their permission), for any number of reasons such as cost containment, greedy heirs, the inability of loved ones to bear the pain of watching someone in failing health, etc. in order to accommodate the much less likely scenario of someone desperately wanting to die but being unable to do it themselves.
I really do believe that you would be more comfortable on a libertarian website than here on FR (unless, of course, you are just here to stir things up).
Thus, it boils down to the fear of the “What if” as a justification for upsurping another’s rights.
Can you provide any sources where this has happened?