WASHINGTON - US President Barack Obama believes smoking marijuana is a 'bad habit' but thinks legal penalties now fall disproportionately on minorities and that states legalizing pot should go ahead with their plans, he said in a profile released on Sunday. 'As has been well documented, I smoked pot as a kid, and I view it as a bad habit and a vice, not very different from the cigarettes that I smoked as a young person up through a big chunk of my adult life,' he is quoted as saying in a New Yorker magazine article. 'I don't think it is more dangerous than alcohol.' The president said he has told his daughters smoking marijuana is 'a bad idea, a waste of time, not very healthy.'