And these things compound, as the other poster mentioned: 24 hours of light use means longer heavy use, which actually does matter to me. I often move around while using the MacBook because it's good to change up my (physical) perspective - and it means I can do that without the charger while hammering every core with rustc.
Once you see that better things are possible, it's very hard to go back to the comparatively terrible performance-per-watt and heat generation of equally powerful x86 laptops.