If you want another treble team I assume you have high standards. To keep up high standards poor decision making by the club needs to be held accountable. Fans deluding themselves into thinking everything we do is perfect makes it very easy to fall very far behind.
It also helps with having a realistic outlook on what is coming. If the powers that Br can make such a major mistake in the market as Palmer, there is really no reason why anyone should have blind faith in them to build another team as good as the last one. The only thing we know for sure is that whatever they do in the market in the next couple of years our squad would have been better if we just kept Palmer. And Chelsea's squad would be worse.