The Good Men Project Become a Premium Member We have pioneered the largest worldwide conversation about what it means to be a good man in the 21st century. Your support of our work is inspiring and invaluable. Good Reasons to Use Multiple Credit Cards If you heard a friend or family member had 5 credit cards you may either think they are a personal finance wizard or an irresponsible spender. Deciding to use multiple credit cards is not a black and white decision. There are good reasons to use multiple cards, and bad ones. There are many factors to take into account before deciding to add a credit card to your wallet or purse. They include the impact to your credit score, the rewards it offers, its annual fee, and much more.