I actually think that granny glasses look really good on some people but the fashion magazines don't think that way. Brad Pitt wore a pair last year and the media mocked him for weeks. I thought it looked fine, it made him look older and more sophisticated.
I wish I had a pair of old granny glasses. I could probably sell it as a collectors item for a decent amount. Or maybe I would keep it. I feel like the trend might come back one day.