I definitely like to reuse kits that I purchase (or have access to as part of a CT). Christmas and birthday kits get used and mixed with other kits a lot. Agreed, it is easy for some products to get lost in your stash, there's nothing quite like 'shopping' through your folders to find some gems that you've forgotten about to scrap with again! (and when the 50% off email comes around weekly, I'm reminded often of kits I haven't used in a while too)