Why bother with compostable plastics if we can just bury the plastics in a landfill and forget about them? The volume of plastics is insignificant, the only pro

Why bother with compostable plastics if we can just bury the plastics in a landfill and forget about them? The volume of plastics is insignificant, the only problem is plastics that don't end up in landfills but in oceans instead.