Earlier quoted context omitted.
What is the evidence with regards to the benefit or detriment of the fear of starving?
I can't cite any studies, but I do remember having heard of many studies indicating well motivated employees are more productive and happy employees are more productive. As for whether the fear of starving is 'good motivation' I would say that personally speaking it is definitely not what inspires my best work. Mileage probably varies quite a bit.
Now that she's left me, it's only fear of starvation that motivates me to keep my job.