Apart from perhaps enabling complex life, what has it given us? Most notably the moon god nutjobs of the middle east, that’s what! That surely hasn’t been very advantageous for complex life on earth. Add that to the list of points this new theory makes saying we don’t need it.
The Sun currently produces one-third of the Earth’s tides. Thanks to the tidal transfer of momentum, the Sun has pushed the Earth slowly outward, meaning the Earth used to be closer, even in the conventional models of Solar System formation. Not sure where the Earth was supposed to have been when the supposed Mars-sized impactor bashed into it.
http://www.freerepublic.com/focus/chat/3376680/posts?page=7#7