This article summarizes research on Americans' attitudes toward euthanasia and physician-assisted suicide from 1936 to 2002. Public opinion polls over this period found that Americans consistently support having the freedom to end one's life with or without a physician's help when quality of life is significantly diminished. However, existing policies conflict with these views. The article reviews definitions, religious perspectives, historical context, factors influencing public opinion like medical advances and political events, previous research findings, and implications for social workers assisting clients with end-of-life decisions.