It depends on what you NEED it for. I do inspections for various building issues, and anything from water damage to environmental forensics might be my daily routine. If you just need to be able to walk around w/o bumping into things, a squeezee key chain light works. If you need to see things a yard or so away, it still works, to not bump into, but not to examine in detail, and then the 100 lumen range comes in more handy. If what you need to see in detail is further away, then you need more power, but, depending on if you ALSO need to see where you're walking, then a floody beam for example is useful...but a spot type beam is better for a longer distance for the same lumens.
If I am in a crawlspace with lots of pipes/ducts, etc...and I want to see what's on the other side, a floody beam will light up whats around me great, but, even if the shine is shining all the way to my target, the light on the stuff next to me can make it hard to SEE the distant stuff visible through a narrow line of sight. So, for that, a narrow angle spot is better.
For some things, I need the color of the light to be more white, for others, off white's OK. If I am trying to tell if a dark spot 100' away is mold or a water stain or efflorescence, etc, the whiter light gives better color rendition.
In other words, lumens are only part of the story. Its like choosing a daily driver vehicle based solely upon horsepower. Some days, 200 lm is fine, some days I NEED 800 lm, it depends. For me at least, I never wish a light were WEAKER though, but being able to lower the intensity is often useful. I USUALLY run all of them on full power though, as a default.
So, to choose what's right for you, think about why you CARRY the light, and what you need it to do for you.