I took delivery of a lovely new pair of Superga deep red trainers today. As I put them upstairs it dawned on me that I already have two pairs of burgundy trainers. I knew this of course when I ordered the new ones but justified it in such a way that I didn't really take it in that I'd have three pairs of footwear fulfilling the same function.
I've done it many times before, sometimes more subtly ( eg three identical style polo necks in three different colours, two Breton tops, same shaped skirts etc)
I imagine it's quite common. Big RUT!