Obviously all of you who voted derailleur are a bunch of ignorant ninnies because derailleurs clearly aren't even worthy of consideration. The most likely cause of your confusion is that you perpetuate the sins of derailleur equipped bikes in all your cycling endeavours rather than allowing the glory of internal hubs to set you free. For example:
1. Dished wheels built to accommodate derailleurs are weak and difficult to build. As a result they're typically way overbuilt and give the impression that the simple task of wheelbuilding is not suited to the average cyclist. Since the undished wheels of internal hubs are inherently stronger you have the choice of either dropping weight with fewer spokes and lighter rims or considerably increasing the wheel strength by maintaining the same specification as a dished derailleur wheel. If you think IGHs wheels are heavier then you can only blame yourself for not building them according to your preferences and if you don't think building a wheel is easy then you can only blame your derailleur cassette for making it difficult.
2. On the topic of repair I would argue that a derailleur cannot be repaired by the average cyclist or in fact anyone at all because they simply aren't capable of working. What is so special about a derailleur system that it is considered functioning when cannot ever work after being scrubbed clean? How would you feel if you bought a new television which only worked when slathered in oil or covered in mud? Would you consider it functional or broken? At least IGHs can be fixed by someone as opposed to derailleurs which are in an eternal state of disrepair literally glued together with rotting carcases. IGH can be used as you need to use them, but deraileurs put the cart before the horse and need to be used according to their own fickle requirements.
3. Also internal hubs allow one to independently tune drivetrain efficiency whereas the efficiency of derailleur setups depend heavily on factors which cannot be optimized. For example, it is well known that things like chainline and cog sizes are some of the most important parameters affecting drivetrain efficiency (particularly cog sizes for small wheels). However, since these are the very parameters which a derailleur manipulates in order to affect mechanical advantage, the very use of a derailleur makes it impossible to have an all else equal comparison with equal chainline, cog sizes, etc. Consequently, like the wheel advantages above, since most derailleur users are accustomed to this derailleur limitation they leave these advantages unclaimed and unappreciated when they ride IGHs.
4. Expense: let's face it deraileurs require the entire gear system to be replaced every so often and cassettes aren't cheap. On the other hand IGHs need only have two sprockets replaced which represents a considerable savings.
5. Fixing flats. I don't know how derailleur equipped bikes got a reputation for being easier to fix flats, but I think it's decidedly easier with an IGH. The tangled web of spring loaded chain that you need to wrestle the wheel away from with a derailleur is a real chore.
6. Derailleurs take up more space all along the bike. This means there will be conflict whenever anything else tries to occupy that space like debris being kicked up, your clothing flapping in the breeze, or even just nice smooth aerodynamic air flow.
A few other points of clarification are:
-Shifting when stationary is exactly what you need for effectively moving on to the next thing while track standing. When riding in traffic the need to shift comes almost exclusively in response to sudden changes in conditions around you. In such cases predicting what gear you will need next or whether you will need to stop, track stand, or hammer is impossible and the planning required to effectively derail yourself into the right gear is futile and a dangerous distraction if you attempt it.
-I think fixed gear or single speed votes should count for hub gear. After all a single speed is simply a hub gear with one gear and shares all the aforementioned advantages of other hub gears.
Adding up Dynocoaster and me (and counting fixie for internal):
derailleur 6 igh 6