Things always change
However complete, contemporary or future-proofed a digital product feels, it will always date. Whether starting to look a little tired or uninspired after a couple of years, or whether it does not offer the features you later determine you need, it is only a matter of time before it starts to fall out of favour with your stakeholders.
Yet still we often design only for now. What choice do we have? Who knows what is around the corner?
But being forced to design only for the present can undermine the future. Yes, that home page needs to show off your new photography and your latest news articles now, but what about the campaign you will plan next year? Yes, the user profile section of the app only needs to collect basic name and address information now, but what happens when you later need a profile image and date-of-birth entry?