Don't get me wrong. Of course you need to visit Machu Picchu, of course you need to get there. But because of this obvious necessity of mass tourism, the whole place has evolved and continuing to evolve into a superficial tourist geared location. Not inside Machu Picchu itself, thankgoodness, but everywhere and anything to do with Machu Picchu. From Cuzco, the trains, the Inka trails, the lodging, the restaurants, the admin. fee, the bus ride on brand new Mercedes-Benz mini buses....
Still go, and you will have an awsome experience. Just dont be the naive tourist.