The SciShow has another great show about what happens when you stop eating:
It might sound great to just be burning fat constantly, but the irritability and the inability to think clearly is horrible. I have enough fat stores that I probably could go for a LONG time without food, but every essence of my body is screaming for it when I’ve tried to fast for more than six hours.
In the end, it’s easier to lose weight by feeding myself small quantities of healthy food every two hours. I drop the pounds like crazy when I do it properly and I rarely feel hungry for longer than a few minutes. Just stopping eating isn’t really an option for me.