1. CEs all coming out in fast succession of each other, giving you no time to have a cool-down period, and no time to bloody save for them (lateAugust-September onwards, GRR!).
2. Buying a CE off of eBay and it getting damaged in the "post" when really it was damaged by the seller (considering the shipping box was mint).
3. When you miss out on a CE, and look on eBay and they are now all 5000x the RRP

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4. When an awesome deal appears, but I've already ran out of money

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5. Not having enough money, time or space for my needs and wants! xx