Well, color me jealous.
Here is the thing, If you dont like being that skinny, go ahead and eat as long as you dont go into unhealthy weights, and you arent destroying your body.
Food that packs on the pounds can also degrade your system by packing it with bad fats and cholesterol, as well as copius amount of sodium. So if you are eating to gain, make sure its at least healthy foods.
Im not really sure if there was even a question here, but those are my thoughts.