Everything xpian said, I second. Trollface, you really need to do some reading on scientific websites about some of your ideas. They really make little sense.

Xpian, the idea of the Earth's orbit destabilizing without the Moon is a misunderstanding of the correct idea that the axial tilt of the Earth would likely be more variable (NOT the orbit), without the stabilizing gravity of the Moon. The Earth's orbit is not significantly affected by the presence of the Moon, since the Moon is in the same solar orbit as the Earth.