At 51 yrs of age my eyesight during the day is strained for the items that lurk in dark places.
Paul
Let me tell ya Paul, it doesn't get better with age. I find a small flashlight a needed tool for looking in closets and cupboards for stuff. But being a city boy, I've found a real world emergency use for lights. The D.C. Metro!
Being a resident of the Washington D.C. area, we go "downtown" sometimes. Anyone who has been in D.C. can tell you that the Metro system is a joke, and a bad one. Well known for breakdowns, and poor service, you ride at oyr own risk. But given the poor parking downtown, we ride.
Well, one time, my better half and I were going down to the Smithsonian, and it was a leg of the trip where the train was deep under ground. It started to go slower, and slowwwwer, and then finally stopped. The lights flickers, then went out. The yellow emergency lights came on for a moment, then they went out too. You never appreciate how dark really black dark that you literally can't see your hand in front of your face kind of dark, that it gets under ground. I had a little Dorcy one AAA keychain light in my pocket, and Karen had a AA minimag that I had dropped in a Nite-Eyz LRD unit in her purse. Those two mediocre lights lit up that Metro car, and when the driver came back through with his two cell Rayovac he was amazed how the car was lit up.
The Metro crew got another train there ASAP, and we transferred, but right after I up graded to the Fenix, and always have one on me. If I'm not certain, I carry two. They are so small, it doesn't make sense to carry a spare battery, it's just as easy to carry a spare light.
But it's amazing how well I can find that can of something in the back of a pantry, when I can read the label!

Carl.