Even though photography is a "classic" pursuit,,,timeless and discovered by each new generation... the commercial market for photographic equipment is driven by novelty. We, as photographers, tell each other that the smart money is in lenses... that lenses will be useful long after bodies have become obsolete. If that were true - and it mostly is - then the camera manufactures would have a tough time selling anything. The truth is that lenses don't become obsolete, but they are getting better as time goes by.
Unfortunately, "better" also means more expensive. Working with precision optics isn't like working with electronics... there isn't a "Moore's Law" of camera lenses. If you want a better camera lens, i8t will almost invariably be more expensive. Today's lenses are sharper and better corrected than their predecessors, but the average selling price has gone up accordingly. Which brings us to the Canon EF 85mm f/1.8 USM. Not a red-ring lens. Not a new lens. No fancy coatings. No aspherical elements. Not sexy like the Sony Batis 85mm f/1.8, yet this is almost a no-brainer as far as portrait lenses go for Canon users.