You've basically swung too far to the other side of the spectrum, and you will be penalized for not having a credit history if you ever seek a large loan. If y

You've basically swung too far to the other side of the spectrum, and you will be penalized for not having a credit history if you ever seek a large loan. If you consider your credit card to be a no-fee (or low-fee) payment mechanism that aggregates your monthly expenditures into a single bill, you can have savings theoretically (though in reality, probably not usefully) appreciating over the course of the month in a bank account, and then pay the bill for your expenditures at the end. This simple money management technique reduces fees paid for ATM access, allows your assets to maximally appreciate, and builds up a very solid credit history. Credit Cards and Lines of Credit aren't evil; they're useful, but they're not hard to use in a manner that will bite you.