My next pair will most likely be prescription. However, that requires me to either (a) go to the eye doctor or (b) call the eye doctor. So...much...work.
I don't wear my prescription glasses in the morning when I walk the pooch anyway, so I didn't think that I was giving anything up by buying that pair of sunglasses. I just wanted to get something, and I've wanted sunglasses for a while. My glasses before these had the magnetic sunglass lenses - they just didn't have any in stock last time that I went (about three years ago), so I didn't get them. I'll get back there eventually.