I aim a bright light their way. They then would know exactly my location. They could then shoot at that light, potentially ending my defensive capabilities
First off just like a weapon you must deploy the light with some form of tactics and plan as to how best to use it , not just wander around your house panning everywhere with the light on like you're looking for your stash of candles during a power outage .
Inside most homes especially those in the city/suburbia even in the middle of the night there is a enough light to walk around in and not run into the furniture .
With that much light if you decide to check out a sound in a dark home a intruder could easily see your silhouette and fire on you if random murder are their intention .
As far as an intruder firing at your light consider doing what I do when checking out a noise .
First I use a 80 Lumen light that is fully charged and up to its maximum capability . Second I use it with the intention of ruining an intruders night vision and ability to accurately place fire on me by first being as far as 15 feet away from a doorway when I shine the light into a room and aim it at a wall at an angle to then bouncy around the room off of the ceiling and walls .
I use it in short burst as I advance on the doorway to keep a person from getting use to the light yet never regain their night vision while I avert my eyes from the light at each burst keeping my night vision completely intact .
I then have am able to peek around a corner into a room and see a persons silhouette if someone is in there .
These kinds of things are a plain waste of time if you're running around with a old style $2 Ever Ready light that doesn't put out enough light to be useful .