Great mysteries of my life

Here's a question that's been bugging me ever since I've been buying kids' clothes:

Why does WalMart put multi-packs of kids' socks into resealable bags? Am I missing something? Is everyone else keeping their kids' socks in baggies, rather than the more pedestrian underwear drawer where my kids' socks live?

(Tangential question: should I be reading something into the fact that my kids' caregivers chose a bag of socks to give to Simon for his birthday? Albeit, admittedly, in addition to a really cool playdoh train set. Or, as Simon calls it, "play-day-doh" - rhymes with potato. I'm just wondering.)