It is a mistake to think that the internal gear hub needs as much regular maintenance as a derailer, despite the claims by Interested.

The derailer bike needs regular adjustments to the derailer screws to keep all gears active and going smoothly. Also, it requires regular chain cleaning, since it is exposed and it works better when the gunk it removed.

The internal gear hub bike needs no such adjustments and its chain doesn't have to be cleaned nearly as often. Of course the cables still need cleaning just like the derailer bike.

Also, it is just ridiculous to argue that you don't have to look at the chain on a derailer bike when shifting. I watch others and ride a lot (I still ride my derailer bike). No way do I switch gears in my big sprocket without looking. Most all look down to watch gears engage.

Obviously, derailer bikes have their place. Big hills are one and long rides (20 plus miles) another. Yet, for commuting in most communities I think the internal gear hub is a better way to go. They are definitely the way to go for the casual cyclist and the person seeking something reliable and simple.