throw-away society

ok, so my middle child came home from the presby. church/centre yardsale yesterday with some real bargains....and while i am pleased about this, i am also appalled.......the clothing/stuff involved in the sale are things left by students in dorm rooms...just abandoned...there was at least 1 television, a computer, lots of furnishings, and clothing......scw got shirts by banana republic, a&f, and express.......for next to nothing.......these are not pieces of clothing that i would label disposable.......do the young have so much extra cash that they can casually discard $37.50 polo shirts...........oh my.......