Is hydrogen useless?

A Slashdot posting tells us that Hydrogen won't save the economy?

Won't it? I'm not so sure... As we in Belgium doesn't have oil or other traditional energy sources, we'll have to generate our energy from wind, sun, water & maybe others. As we have enough water over here to make Hydrogen, that can't be the problem. Even if there are some efficiency and cost problems at the moment, technology will evolve like it did always and those problems will be solved...

So my conclusion is that Hydrogen will be used in the energy provisioning of the future. The Slashdot article is too pesimistic imo.

What do you think?