Ok guys... if I have a few chem lights in my kit in my truck and I need to light up the road so people can see what's going on I can easily toss them on the road, string them up, or do whatever.

When I`m assisting the other persons/vehicle and I happen to forget to pick them up during all the commotion I won't die because I just lot 5xXX$ worth of goods.

And as far as lakes, caves and ponds... it's "FUN" to light up a pond at night with one attached to a fishing line or cord, and the same for caves... nice light for around camp or to mark corners, and occasionally you COULD forget one or two... and again not freak out about losing a high dollar item.

Maybe survival situation using one in water to attract fish (may be illegal in some spots) and you lose it... you didn't just lose your primary source of light (krill, flashlight, etc) for this task.

As I`m sure everyone is aware there are TONS of usages these things have where a normal light you just wouldn't want to use.

Lighting up helo landing area, a mini air strip, a save zone marking the trail, etc.