It is convenient to its perpetrators in that it allows them to steal taxpayer money while keeping the taxpayer in the dark; even approving of the theft - all in the name of space.
Really? Let's look at the words of The Venerable Bede:
"We call the earth a globe, not as if the shape of a sphere were expressed in the diversity of plains and mountains, but because, if all things are included in the outline, the earth's circumference will represent the figure of a perfect globe... For truly it is an orb placed in the centre of the universe; in its width it is like a circle, and not circular like a shield but rather like a ball, and it extends from its centre with perfect roundness on all sides."
De temporum ratione (The Reckoning of Time), 725 CE
Was an 8th Century English monk in on stealing taxpayer money, too?
Water is not flat on the grand scale - it follows the curve of the earth.
Here's a Christian source, taken from a Creationist website: perhaps you'll take it all in. The second link is the best, though the first gives a good overview.
Da_Shrimp,
You are denying the truth.
You are unwittingly opposing your Creator.
Wake up!