America's fat cats are convinced a million dollars won't get them very far these days, according to a survey conducted by Fidelity Investments. The investment firm found that roughly 42 percent of more than 1,000 millionaires surveyed do not consider themselves to be "rich." The average survey participant was 56 years old and had a mean of $3.5 million of investable assets, and all respondents had at least $1 million in assets—but many participants said they needed $7.5 million to feel truly wealthy. "Every person in the survey is wealthy," said the president of Fidelity's National Financial unit. "But they are still worried about outliving their assets."