I'm old and don't give a crap what people think about how I look, so my sun glasses are on a leash since I take them off a lot to shoot pictures.
I have a couple of pairs of Maui Jim's that I loved before my eyes went bad. The optometrist said they can't put prescrip lenses in them. I may spring for new ones next time I get sunglasses though, I think they're worth it.