When?

People tell me that I'll need it someday.  I'll need this thing, whatever it is.  I never seem to need it now, but one day in the future I will most certainly need it.  In the meantime I have to dust it and reach around it to get at my other things.  I think we have storage capacity for up to one year.  Anything that I'll need further in the future, I might have to rent.