I discard a small fraction of truly terrible movie DVDs on occasion (the 21st-century RUNNING SCARED was mega-atrocious), though I keep the vast majority of the others. But if certain films are not as memorable, I often ditch the box and place it in a small sleeve. I never toss the classic boxes, or my guilty pleasures like the LOST HORIZON remake. Since I've collected a ton over 24 years I've found creative places to place these sleeves to save shelf-space. A standard DVD box can sometimes hold three more discs inside it. So I often combine a classic Blu-ray with an earlier edition DVD for the same title, especially if older special features differ. I've made DVD combos of LITTLE WOMEN, HAMLET, FRANKENSTEIN, 12 ANGRY MEN, etc., and it's a refreshing way to join similar films together, like AIRPLANE and ZERO HOUR. There are limitless combinations.....