The land on the moon is worth very little as there is almost no water on it. If we could extract rocket fuels from there we would already be sending people to mars. People don't seem to understand how valuable our planet is.

For water, the moon mostly lacks hydrogen. There's lots of oxygen in the rocks up there.

In general, I have sympathy for your position.

I think the person you replied to meant that being on earth, all you need is electricity. The rest falls into place.

Yes, the earth is extremely convenient.

In simple terms, having electricity is great. In contrast, oceans full of water at a balmy 20C have lots of heat energy, but you can't really use it, if there's no gradient.

See the second law of thermodynamics.

Or in other terms: you want electricity and a way to get rid of waste heat, like being able to radiate into outer space.

Hum... It's the only one we have to consume. But we still need the others, even if on fixed amounts.