I think this conversation between my wife and I sums it up:
“You already have a pair almost exactly like those, don’t you?”
“But these shoes are completely different! I’ve been looking for a pair like this for a long time.”
“How are they different?”
“The heel is 1/2″ shorter, for one.”
“Um, okay. But you never wear that other pair anymore, why don’t you at least give them away to make room in the closet for this new pair?”
“I can’t give away that pair, they were a present.”
“A present from who?”
“Myself.”