Utterly stupid little things, its money that is less useful in EVERY situation and expires! Even at the store where you can use it, what do you do with the money that's leftover but too little to spend? Especially at expensive places, you could very well end up with 10-20$ OF YOUR OWN MONEY, that you can't even use!
I was given a dunkin giftcard for volunteering at a repair cafe. First of all I'm on a diet but secondly I stuffed it in my wallet so quickly I completely forgot about it. The day I remember and go through the trouble of attending such a wretched establishment I was told it expired after I finished giving my order! After such bother to try to use this cursed thing I refuse to return fruitless from my endeavors so I paid with my own cash.
It is now, sulking into my hashbrowns and Boston cream do I realize I am now poorer, fatter and fucking miserable. FUCK gift cards.
I can think of a couple of uses from the top off my head.
For parents. This is a way to control what kind of products your children could get, giving them a limited sense of control.
There are people that are not very generous when it comes to giving away something. Like those who won't give money to beggars because they believe beggars will spend it in drugs. But in this situation they think they keep some control on the money they give away.
In both cases, if the person is smart enough, they will find out how to make cash from the gift card anyway. However, they'd be really gifted salespersons if they can get the whole value back.