Not trying to argue? Perhaps if you understood how plants function, or soils function, or how to irrigate properly you might not think as you do. Typically people who dismiss technology and proven methodologies used by any real professional are those that are ignorant of these. Curious though, since you seem to feel it appropriate to analogize, do you wait until you are on the verge of death to eat or drink? Of course you also understand that wilt may not be a sign of low soil moisture at all ..... right? How much soil water has been depleted from the effective root zone of the plants you are irrigating when you observe wilt?