I keep my TV on.

I don't think I even could. I need complete darkness. I wanna feel like I'm being swallowed by the void. I can't sleep with any light whatsoever.

No. Unless my daughter is scared. Which is rarely.

so many times I felt so tired after returning home from work that I felt sleep in corner of my bed while watching movies or after having dinner , later i noticed everything is on including lights

I have no fear
I close the door and switch the lights off

I used to need a night light, though i don't know when that ended. Using a light bright when i was a kid, was really fun, because whatever design i made on it, i could look over at the glow of it.

not usually, but often sleep during the day so as long as not too bright it's not as important as being too hot/cold to me for sleeping

No. It's got to be dark, cool, and quiet for me to be able to sleep

Sometimes, the dark want to drag me away, then I keep the light on lol

It depends on where i am sleeping and if i've watched a scary movie.

No never

No, it bothers me.

Lights off.

I don't like sleeping with any lights on, (you sleep better in total darkness). Unfortunately my partner disagrees so for the sake of the relationship I agreed to a light in another room with the door slightly ajar

no

I usually forget one or two, but after I get under the covers, I don't care

Never