Size - We've grown accustomed to seeing images on a 6" screen, which is less than 1/10th of life size. A 20" x 30" print reveals the details of an elaborate dress or the beauty in someone's eyes we can't see on a small screen.
Nostalgia - Walking by a print every day in your hallway or living room conjures the happy memories from that moment in time. Yes, the photos on our phones and "On this day" posts may have the same effect, but a well-placed print makes you smile each time you walk by it!