As wishful as this type of thinking is it doesn't take into account that all of our desires have real solid biochemical instigators IE: its more part of our natural physiological response to certain stimuli than anything else.
While there are indeed natural physiological responses, there are also learned, or psychological responses. These can be more compelling than the natural responses. And more dangerous, as well.
"A casual stroll through the lunatic asylum shows that faith does not prove anything." - Friedrich Nietzsche