The coupon/discount alone isn't enough to make me buy.
There are a lot of things we stock a one year's supply of. And if I'm at that limit, unless the price of the item coupled with the discount is 'the lowest' I know I can ever get on the item, I will pass. If it is a rock bottom price, and has no or a far out expiration date, I will take advantage.
Mostly I look for these kinds of deals on non perishable items like TP, tissues, health and beauty aids, cleaning products etc.
Couponing just isn't what it once was, and really isn't something I spend any time on anymore.