For Science. And because Venus will be farming planet. They say floating cities but really it would have to be floating farms. All that Co2 and N Days that are 243 earth days long = cabbages the size of houses.
Now there is the spirit unfortunately you gotta bring your own water and potassium as well as pretty much everything other than CO2 , Nitrogen and Sulfur.
Unfortunately it would be heavy water The Veneral deuterium/hydrogen ratio tips drastically to the deuterium side. I was thinking if maybe there was a way to condense the solar wind with a big ole negatively charged field. What do you get when you mix superheated hydrogen ions and [C]O2? I left out a C
I looked it up Methane and Water a big wet fart. So you are correct about the bad joke. Heavy water is used as a coolant in reactors but energy is cheap on Venus and heavy metals are not.