There is no right or wrong answer to this question. But one thing we will say with certainty about this is that you should have as few as you can get by with. Everyone knows how easy it can be to overspend and get into some serious debt. Common sense tells us not to get in over our heads - but common sense is all too often not behind the decisions people make, especially about credit cards. Americans are used to instant gratification and being encouraged to shop. There’s nothing wrong with shopping as such, but credit card debt can quickly get out of hand as many Americans know all too well.