I have also allowed myself to get caught up in the pre-order hype so I hear you loud and clear Aurich.
It is not just with new pins either, it could be any pin. I seem to want something new to play every 3-4 months and find myself going into search mode even though I have no more space. I started bouncing prospective purchases off a friend and fellow Pinsider and found that it definitely helps. A voice of reason to keep me in check.