LOS ANGELES, Calif. -- Most parents want their kids to spend less time Tweeting and texting - but Billy Ray Cyrus isn't happy that daughter Miley is done with Twitter.'Miley. You are a light in a world of darkness,' he Tweeted on Thursday, following Miley's abandonment of the site - and over a million followers - earlier in the day. 'You were born 'Destiny Hope Cyrus' for a reason. You can't leave everyone now.'