Won't deny that a custom hub is a pricier option and for some of us the freewheel is not as obsolete as others think them to be... nice freewheels are still being made, are widely available, and they seem to outlast cassettes.

Also... the freewheel hubs are completely re-buildable and require very little in the way of service by virtue of their cartridge bearing design and will run tens of thousands of miles without need of anything.

I do not like disposable parts and even though a Shimano hub will give a long service life there is no way to rebuild them... I like the idea of running my hubs for life.