Hey astro, exactly. Makes them think it's hard days ahead and time for protection. Works for us optimists, right? 
I also like to think that it keeps them on their toes, making growth more vigorous when they DO get water. As if they were thinking, "Water... C'mon, GROW, who knows when we'll get water again!", as opposed to more frequent watering and plant-laziness because, "Chill out girls, we're spoiled and you know it.." sort of thing.
And thanks for the compliment!

I also like to think that it keeps them on their toes, making growth more vigorous when they DO get water. As if they were thinking, "Water... C'mon, GROW, who knows when we'll get water again!", as opposed to more frequent watering and plant-laziness because, "Chill out girls, we're spoiled and you know it.." sort of thing.
And thanks for the compliment!