You seem to be thinking about having "nothing to lose" as being like having a magical credit card that you never have to pay back. Since it never has to be paid

You seem to be thinking about having "nothing to lose" as being like having a magical credit card that you never have to pay back. Since it never has to be paid back, one is now "free" to buy whatever they want. This could indeed be a liberating experience. However, depression can manifest in feeling like the only thing that is available for purchase is nothingness. If you "know" that whatever you buy will turn out to be an box full of nothingness then having a magical credit card isn't very exciting.