Last spring, Frank Turkaly tried to kill himself. A retiree in a Pittsburgh suburb living on disability checks, he was estranged from friends and family, mired in credit card debt and taking medication for depression, cholesterol, diabetes and high blood pressure.It was not the life he had envisioned as a young man in the 1960s and '70s, when "people were more in tune with each other, people were more prone to help each other," said Turkaly, 63, who owned a camera shop and later worked at Sears. "There was not this big segregation between the poor and the rich. . . . I thought it was going to continue the same, I didn't think it was going to change."