If you need a light source that leaves your hands free, chances are you are doing a task within arm's reach, in which throw is utterly useless.
No, many of us browse this forum because we use our headlamps for activities such as (faster) running, orienteering, and cross country skiing (and dog sledding, cycling, etc.). I also use it for working in the dark, but running/skiing is probably more than 80% of my use for headlamps. I actually don't use any handheld flashlights - why wouldn't I want my hands free when I'm using a light?
I like a beam that combines a bright central area for distance and a moderately wide spill area (about 75 degrees) so I don't have to constantly turn my head to situate myself and keep aware of my surroundings. The McR-18s reflector on my modified Eos produces a beam like this and is perfect for my purposes. When pointed up the trail, it has both throw and spill, and the transition is so smooth that I can't see it at all (even looking for it) because the central part is aimed further up trail than the spill. Though I have a couple floody headlamps (PT Aurora, Quad), I'm happy enough using my modified Eos for close work.
The original Eos's throw-only optic (before I modified mine with the reflector) was too narrow. Using it gave me tunnel vision - a not-so-good feeling because I could run by a moose or something and not see it because the beam was so narrow. Or I'd have to constantly sweep the beam to keep aware when all I wanted to do was just to run/ski. Of course, an all flood beam is also completely useless if your use is for running or skiing. That's why I haven't been interested in the Zebralights for instance.
I wonder how much spill these Fenix beams have? An measured angle, since adjectives are so subjective? I'd like to avoid needing to use the diffuser, since it would kill the throw, and I need both spill and throw at the same time. I remember in the long Eos mod thread, the OP used a Fenix reflector, and I think I just assumed that it was similar to the McR one that I'm happy with. 180 lumens would be quite a bit brighter than my modified Eos (though it is really bright for what it is).