It is the policy of this state to provide persons with serious mental illness adequate and humane care, that, to the extent possible, while meeting the purposes of rehabilitation and treatment, is:
(1) Within each person’s own community, recognizing that some services are appropriately provided in facilities that provide services to the entire state;
(2) Least restrictive of the person’s freedom of movement and ability to function normally in society while being appropriate to the person’s individual capacity and needs;
(3) Directed toward eliminating the need for services and promoting the person’s independence.