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At 80, Sylvester Stallone joked this week about why he 'can't retire' from acting, citing financial obligations despite decades in the business. In a related interview with Fox News Digital, Stallone also revealed he has 'millions of regrets' about performing his own stunts throughout his action career, calling himself 'an idiot' for continuing the practice for so long. The comments, made in separate interviews published Tuesday, offer a candid look at how the 'Rocky' and 'Rambo' star views the physical toll of his decades-long career as he continues working into his 80s.