Score one for the cranky people! From the BBC:

Feeling Grumpy 'Is Good for You'

An Australian psychology expert who has been studying emotions has found being grumpy makes us think more clearly.

In contrast to those annoying happy types, miserable people are better at decision-making and less gullible, his experiments showed.

And note, people of Seattle!

His earlier work shows the weather has a similar impact on us—wet, dreary days sharpened memory, while bright sunny spells make people forgetful.

Thanks, Leslie Dean!