To each his own but my Kestrel goes with me every time I'm hunting or shooting.
You are correct in that it only tells you what the wind speed is at your location, but without it are you going to just guess? That works o.k. for short range stuff but for the long stuff I want to know what the wind is, exactly if possible.
I also use the wind meter and its reading at my location to have a relative indication ow what the wind is doing to the vegetation, trees, leaves etc. downwind. I use the condition of the firing point vegetation and compare it to what's going on at different points out to the target location. I can compare the grass movement at the target to what it's doing at my location as well as along the line of sight. I can't take the wind meter to the target but this helps me get about as close as I can without just guessing or ignoring the wind.
Range is something we can come up with very accurately with laser rangefinders but the wind, and your ability to read it and compensate for it, can make or break you in canyon country or windy country.
Again just my way of skinning the same cat but it works for me and keeps me happy.