You really truly never think of using the headlamp on one trip after another? OK. That seems to establish your pattern of non-use pretty well, so perhaps you could get away with no headlamp just fine maybe 98% of the time.

I still wouldn't recommend having no light source at all. In an emergency it can make a big difference to be able to see at night.

You might get away with a fairly bright LED pinchlight that can be switched on without having to maintain a pinch-hold on it, and could be clipped to a hat brim for hands-free use. You'd save maybe an ounce or two.

Test it each time before you hit the trail.