Ecclesiastes 3:6 (ESV)

6 a time to seek, and a time to lose; a time to keep, and a time to cast away;

Sometimes you have to search because something precious or important has been lost. It could also be that the missing item has so little value that it would be a shame to spend your time looking for it. Certain people keep a lot of things. That may be valuable and important. As you become older and have to move into a smaller home, the time often comes when you have to get rid of things that you have kept until then.