A report from UBS found that wealth is a double-edged sword for today's millionaires, bringing plush comforts and a better lifestyle but also carrying increased stresses, anxieties and sacrifices with family and relationships.
Today's millionaires also feel they are one stock-market crash away from losing their fortunes and that there is no such thing as "enough" wealth to feel secure.
"Millionaires enjoy a great deal of happiness and appreciation for what they've earned," said the UBS Investor Watch report called "When is enough ... enough?" But "many feel stuck on a treadmill, without a real sense of how much wealth would make them satisfied enough to get off."
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The report found that 52 percent of millionaires expressed the feeling of being "stuck on a treadmill, but I can't get off without giving up my family's lifestyle." It said that while satisfaction goes up as wealth increases, 58 percent of millionaires said their lifestyle expectations have also increased—so the more they have, the more they want.