Gravity does not exist. It is air weighing you down.
But you ask, "all the air over you weighs about 2 tons"
Well, due to pressure, Pressure pushes the air up while air pushes down. The air pushing down is a greater force than pressure pushing up, therefore, causeing things to fall down.
U idiot.... How the heck is pressure going 2 be pushing upwards!!!?? You must realize that al;l that pressure is is weight, so ur initial statement is correct, except about there also being no gravity, there is gravity but the air pushes u as well, because if gravity didnt exist... how does the air push u down???