Ok, maybe they are typically hostile entities, but at least they can be friendly if you raise them as babies like with Jim-Jim!
Besides, why would you eat a Smiler??? I don’t think they have any nutritional value to the human body. If anything, it might be bad for you! It might make you sick, or infect you in some way. They aren’t like your typical chickens or cows, ya know. So why take the chance?
Just let the Smilers be! Either avoid them as hostile entities or raise them to be friendly as babies, but for goodness sake, man, don’t EAT them!