UA,
State sanctioned suicide would be discriminatory against age, sex and race. Not to mention morally incomprehensible. I'm going to list a few statistics from the CDC that should give you pause from your idealism and allow you to entertain realist thoughts for a moment:
In 2010, over 33% of descedents tested positive for alcohol, almost 24% for antidepressants, and 20% for opiates including heroin and prescription painkillers. So you have a situation where a person could be assisted in their wishes to kill themselves while under the influence of alcohol, antidepressants, heroin or prescription painkillers but they wouldn't be able to drive themselves to see that person without being subject to arrest. Not to mention, their minds are clouded by drugs and but for that influence they would not be wanting to kill themselves.
In 2013, the CDC estimates 9.3 million adults reported they had suicidal thoughts. Those that had serious suicidal thoughts were not spread out equally among all ages. In fact, the younger you are the more of you there are. An estimated 2.7 million people actually made a specific plan to commit suicide. Again the younger you are the more of you are in your group.
This next fact should really cause you logistical nightmares.
In 2013, among students of 9-12 th grades 17% seriously considered committing suicide in the previous 12 months. Females outnumbered males twofold. Almost 14% made a concrete plan. 8% actually attempted suicide.
Males take their lives nearly four times the rate females do. But females are more likely to have thoughts about committing suicide.
Among Native American/Alaskan natives the suicide rate is 1.5 times the national average.
If you are a mixed race......you are two times more likely to have suicidal thoughts than any single race person.
Hispanic students in grades 9-12 are have suicide thoughts consistently higher than white and black students.
Full time college students age 18-22 are less likely to attempt suicide than their counterparts who are not educated.
In 2013, almost half a million people were treated in hospitals for self inflicted injuries connected with attempted suicide.
These stats cry out for compassionate medical intervention not assistance in carrying out misguided, often temporary, intentions to harm oneself.