Science proves that you tend to spend less money when you pay with cash, especially on unplanned and/or impulse purchases. I guess the psychology of actually ha

Science proves that you tend to spend less money when you pay with cash, especially on unplanned and/or impulse purchases. I guess the psychology of actually handing something over then having less of it afterwards makes people think twice about if they really need to spend the money. Also getting extra cash when you over budget has an extra step (trip to bank/ATM) so you're probably more likely to stay in budget or to rethink if you really need that over budget purchase. You'll probably save in the long run. http://www.livescience.com/2849-study-credit-cards-spending.html http://www.livescience.com/2849-study-credit-cards-spending.... http://www.investopedia.com/articles/pf/08/pay-in-cash.asp http://www.investopedia.com/articles/pf/08/pay-in-cash.asp http://seekingalpha.com/article/20333-guide-to-credit-cards-how-credit-cards-encourage-you-to-overspend http://seekingalpha.com/article/20333-guide-to-credit-cards-... http://business.time.com/2013/08/08/turns-out-you-only-think-youre-spending-less-money/ http://business.time.com/2013/08/08/turns-out-you-only-think... I especially think this is interesting: >McDonald's found that the average transaction rose from $4.50 to $7 when customers used plastic instead of cash