
Warren Buffett isn't against all types of borrowing, but only loans that put essentials at risk for non-essentials. Buffett had said in 2001 that repaying high-interest debt like a credit card is above any investment idea he could offer.
'The idea of trying to borrow money at 18% [or more] and thinking you're going to get ahead in life—it isn't going to work,' he had stated when asked about high-interest debt decades ago.