Will we run out of water before fuel?

let me remind you that a person requires about 3 liters of water per day minimum to survive.

Load of garbage. There are now scientific studies coming out that the earlier estimated amount of water per day is actually DETRIMENTAL to health due to thinning of enzymes and a few other factors. I drink about 2 glasses of liquid per week, why am I alive?

You guys.

Converting matter to energy is not as pineappleing simple as you make it sound.

When you burn gas, you're not converting matter into energy. You're releasing potential energy from the matter. The matter doesn't change in mass, it changes in physical or chemical form. The energy that comes out is a conversion of one form of energy (potential) into another kind (in this case, thermal and kinetic, I think).

But yeah, water is never lost under normal circumstances. Only way to lose water would be to break the molecular bonds of the hydrogen and oxygen and permanently ensure that the hydrogen isn't allowed to bond with oxygen ever again.

Molecular bonds break and form quite easily, actually; water is an infinite resource if you consider the universe infinite. It technically isn't, but in our current highest order of thinking, we cannot comprehend what it outside the barrier edge of the universe, so even if we have the KNOWLEDGE that it isn't infinite, our minds still meld what is inside and what is outside of the universe together, to soothe our unease about not knowing something, a bit like what religion does with how we were created, et cetera.

Oil is a limited resource, because, even if it is a renewing one, we use it exponentially faster than it can form. Basically, if we don't get a new energy source within a few decades, we will have no fuel anywhere that is within our reach. Which, by the way, will happen thanks to our lovely oil monopolies; they will milk it it down to the last drop and then bail out and leave us in the burning building alone, to figure out how to sustain life on our own. Not to be an anti-capitalist or anything, but the very idea of such a thing is a veritable breeding ground for corruption.