Short answer, yes I now wear sunglasses. I used to wear them sporadically in the past. I live in Australia. Kite almost every day all year round. I guess about 1/3 of people wear sunglasses.
Everybody should wear sunglasses. The effects of UV are cumulative. Not everybody will get eye problems. The UV is the cause, but genetics is the trigger for actual medical problems. There's no way to tell if you're genetically susceptible to eye problems.
The problem with sunglasses is that they don't work very well on the water. Virtually every kind of treatment and cleaning regime fails in the end. All glasses will fog. All glasses will get drops and muck on them. You can fix things to an extent by dipping your face in the water. The result is not always that good. I have tried lots of glasses but always end up giving up on them.
I am now wearing Lips Typhoon and Surge sunglasses. The Surge are expensive, the Typhoons outrageously expensive. Thing is, they work pretty well. I am continuing to wear these glasses. The Surge are good, the Typhoons better. The coatings are permanent so you don't have to keep applying stuff like RainX (which doesn't work). At their worst the water contracts to fairly small drops and dries to a few spots. That's much better than the dried sheets of salt water or murk you get on ordinary glasses.