Stimulants already suppress appetites and nicotine is a stimulant. Seems like overkill.
And yeah, when I smoked, it was necessary to consume large amounts of coffee, pizza, omelets, burgers, and beer. It all makes the cigarettes even more enjoyable. No one looks forward to a smoke after a salad.
I quit 10 years ago and weigh less now than I did when I smoked. Of course, one must minus the weight of one lung.