It is useful when you really need to buy something and can find a coupon for it. It is not good if you buy something just because there's a coupon but you don't really need it.
This. I look at it as I'd rather have 50 cents than owe 50cents and if I saw 50cents laying on the ground I'd sure bend over and pick it up.I look at it this way for every coupon I use I've just given myself a raise.. If it's a product you use no matter the face value of your coupon is you just saved yourself some money.