system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Since we're aware of the elements required to create water (H2O), are we able to do so? Are the elements scarce/abundant? If not/so, why don't we just create water and supply it to places in need?

This might be a dumb question, but it seems so simple...which might be exactly why it isn't...
gpt
The elements of H2O are Hydrogen and Oxygen, two gasses. They're not all that common in their raw form because they react with things, so they're normally in compounds, like water. You can get hold of pure hydrogen and pure oxygen quite easily though - the easiest way to do it is to use electrolysis to split water. Water is extremely common compared to almost anything else.

It takes a lot of energy to split water into hydrogen and oxygen, and when you combine them back again to form water, you get a lot of energy out. You can power a rocket with it.

None of this is more practical than just piping water to somewhere that needs it.

Edit: BTW if you think "there are no stupid questions", have a read of some of the lower-rated replies to this post.