People rely on acquiring loans for different reasons. Others acquire loan to make both ends meet. Others take out loan due to emergency and unexpected reason. However, there are some who take out loan just to indulge their whims, without thinking the future implications of their inappropriate loaning.
Regarding credit cards, it only destroy someone's life if the individual let's his/her whims and caprices get the upper hand of his/her life. They tend to make wrong decisions, purchase things that they really don't need. And just woke up one day that they are facing huge financial obligations that they perfectly know they cannot handle.
However, not all credit card holders are irresponsible. There are some who uses their cards wisely. They just use it if the moment really needs it.