What about hydrogen power as a future source of energy?

Many charlatans/demagogues want to indoctrinate the public on the narrative of so called "clean energy" and "water vapor".

Potentially, huge quantities of hydrogen gas could be produced by splitting water (from the oceans) using electricity from solar panels.

However, there are some serious considerations and technical/engineering challenges:

1. How to store large amounts of hydrogen? The volumetric energy density is low, which means e.g. more storage is needed.
   How much energy will be needed to compress hydrogen or to maintain the storage?
2. Are there better ways to produce hydrogen than splitting water with electricity?
3. At large, global scale, how will we deal with all the water vapor and the oxygen generated by splitting water?
4. Hydrogen is a very hazardous gas. Remember the Hindenburg Disaster of 1937!
5. How do we mass transport hydrogen gas e.g. from producer to user?

I am very confident, we can find solutions to these issues thanks to human ingenuity! 

However, e.g. currently way too much money is wasted on environmentally harmful and intermittent wind power and solar power instead of focusing it on e.g. nuclear fusion, superconductivity, and hydrogen power.