A lot of people wanted shoes at that store that day. Some bought them. Some went home disappointed. Only one (or three if you count his thug friends) decided that armed robbery was a legitimate method of fulfilling his wants. Fortunately he picked someone who wasn't going to be a victim that day.
I’d also be curious, couldn’t they be had by internet order... maybe not by the (ahem) Holidays, but they could be had.
Vice not even for something really valuable, just vanity.