The quality of life of the person with Alzheimer disease must be a central focus of care. What remains of “the good life” when one suffers of Alzheimer’s and so many important capacities and conditions disappear? What exactly people consider to be worst thing about dementia can vary from person to person. So, for a good life it is necessary to know very much about patient’s personal preferences. All those who participate in the lives of people with Alzheimer disease should know or learn that, despite changes and loss of abilities, people with Alzheimer disease are able to find pleasure and experience satisfaction. The disease does not remove a person's ability to appreciate, respond to and experience feelings such as anger, fear, joy, love or sadness. Recognizing an individual's abilities, interests and life-long skills helps to maintain and enhance that person's quality of life. As the disease progresses, preserving the quality of life of the person with the disease will require the provision of appropriate social and physical environments.