I still trip over anvils in the dark and hit my head on things in the night. Relying on available light will always be my thing.

Pretty sure it's a generational thing. And, I should have left "pocket" out of my post. I sleep naked too, w/ my phone charging on my nightstand. But when you're trying to save on the electric bill, and wake up in complete darkness, it's an extremely useful tool..

I couldn't memorise phone numbers even before mobile phones became a thing.

As to using it for a light, I find I do that a lot.

I have 5 phone important phone numbers on a piece of paper written down that I keep in my wallet. Just in case.

I have about half a dozen numbers memorized. I don't have to worry about light getting to the bathroom because I have automatic lights. On a side note, I almost always find myself sitting on the toilet messing with my phone...

I don't have mine with me every moment, sometimes I forget to take it when I go places, or if it needs charging I'll leave it even though I have a car charger. But, one place I never thought I'd take it with me was on my mountainbike rides. Now, however, I consider it an extra safety measure when I'm riding. As far as remembering #'s? No need really. Right?

Never did.