Wear Sunglasses?  

Down with "crows feet"! I wear mine to protect from glare. I don't want to squint. I could care less about the cool factor. As for fashion, I have a grabby 11 month old son. I have a 6 year old daughter. Most of my sunglasses cost $10 or less.

I live in Florida where the sun is very bright most of the year so wearing sunglasses is a necessity here. I wear prescription glasses with transition lenses that darken automatically when I go outside but I also have a pair of prescription sunglasses that are a bit darker.

I use only sunglasses to protect eyes from direct sunlight, or too harsh when I was driving.

I've grown very dependent on sunglasses when I am driving. I don't like squinting and I think glares are very distracting on the road. So I keep my glasses in the car. Even in winter, the brightness of the snow on a bright clear day is sometimes distracting too.
Of course it doesn't hurt that you look cool wearing them.

I need my sunglasses everyday. Like you, I also squint when I go out during daytime
Maybe it can help with me looking cool lol but I do not buy fancy or sunglasses that are currently in fashion. I buy sunglasses that are a little expensive but very sturdy and I use them until they give up on me.
Have a nice day!