The GoF book itself doesn't describe them as good, unequivocally. It's been a while since I read it, but I remember using the book itself as ammo for arguing w

The GoF book itself doesn't describe them as good, unequivocally. It's been a while since I read it, but I remember using the book itself as ammo for arguing when not to use particular patterns. They cover trade-offs, and the situations when the pattern may be appropriate or not.