>be the Luftwaffe
>try to drop paratroopers on a city defended by the world's best integrated air defense (Radar, RAF, AA)
>your transports are slow, unarmed sitting ducks
>they get mulched by Spitfires before they even reach the coast
>those that do get through land scattered and alone, with no heavy weapons or supply
>get mopped up by the Home Guard with farming tools