It wasn't until I joined a camera club (aka geek club!) that I learned that photography means 'painting with light'. These days people create the most amazing art just by opening their camera shutter and running around with a sparkler, a torch or flaming wire wool! I haven't done much with light painting, but I can see why it would become addictive.
If you want to give it a try it's super easy. Just wait till it's dark, set your camera to manual. Choose a shutter speed of about 30 seconds and run around with a light!