except for its volumetric energy density, which sucks. It's often compressed to 350 bar.
Orbital habitats have to withstand an internal pressure of 1 bar, give or take.
So, if you make your H2 rocket fuel tanks out of 350 layers of 1bar proof material, and drag it up into space, you could end
up with 350 fueltank-sized living or storage modules, to connect together.
Even discounting the obvious exaggerations, you could make an entire space station in one go.