Microlights as a whole are a good idea; some are better than others. My old boss bought several Innova lights as pictured. When they came in, one was already on in the blister pack, & we could NOT turn it off (didn't want to use the boot heel options since we did return it). While they make other lights that are great, their microlights are not up to par, IMHO.

The Photon II (from LRI), on the other hand, is the gold standard (I have P1, P2, & P3), & much prefer the P2. They're amazingly bright, ridiculously lightweight, and there when you need them. I have one on each of my 3 keychains, plus others in use around the house.

As others have pointed out, they have a lot of utility: checking for brown recluse spiders before I crawl under a desk to look at a PC, for instance, is a BIG one! So is having one instantly available when the lights go out (either at home, or at work).

The P2 I use most has spent a rainy night submerged in a puddle (worked great even wet, & only needed drying off, inside & out).

Try one; I think you'll like it.

David