Why does Blanche drink In a street car named desire?

In "A Streetcar Named Desire," Blanche DuBois drinks as a means of coping with her troubled past and overwhelming emotions. Alcohol serves as a temporary escape from her feelings of loss, loneliness, and the harsh realities of her life. It also reflects her fragile mental state and her inability to confront the truth about her circumstances. Ultimately, her drinking exacerbates her descent into madness and contributes to her tragic fate.