Because he would almost instantly perish on his own.

He would start up on a wicked food bender once his mom wasn't looking out for him...

Alex: My chin is being swallowed up by the abyss once known as my neck...

My heart is bound to explode if I keep eating like this.

He would end up with advanced cardiovascular disease within a week and perish alone in his dingy little hovel.

Panzie is much better off with mommy and he knows and accepts it.