the world has been "destroyed" many many times by natural disasters and such. we know this ourselves.
and this includes later in earth's formation when life existed here, and survived every one of those times.
the Mayans never implied all life will be wiped out.
they simply mention that it will be another disaster of not so specific kind. one life has survived before and will again.
now the coincidence you gotta pick to believe from, is that the long count calendar of theirs always ends with the earth's realignment in its (however long years) rotation in the galaxy.
other moons, planets, comets, and other such space bodies rotate and move when gravity pulls them about every so many years. why cant earth?
