Is it normal to sleep with the light on?
Mostly.Normal for most people
Yes, it’s normal to sleep with the light on if it makes you feel more comfortable or safe. Bright light can make it harder for some people to sleep well, so a dim night-light is a good middle ground.
Plenty of people prefer some light at night—because darkness feels unsettling, they like being able to see the room, or it’s simply what they’re used to. There’s no weirdness in it.
The main trade-off is that bright light can interfere with sleep for some people. If you wake feeling rested, it may be working fine for you; if not, try a dim lamp or night-light instead of a bright overhead light.