Is western civilization going to decline

or collapse ?
In the beginning of the twentieth century Oswald Spengler predicted “The decline of the Occident”.
Hundred years later Oreskes predicted “The collapse of western civilisation”.
Spenglers work was mostly based on the histories of past civilisations, while Oreskes study bases on contemporary environmental, political, social, scientific etc data.
Despite its traditional philosophical approach, the Decline caused for decades quite a bit upheaval, whereas the Collapse gets, despite its terminal vista, barely any reactions. Is it because Hollywood made the collapse familiar, or because of a growing collective awareness that Western civilisation has already past its zenith, and its future is thus greeted with indifference, and even resignation.
Of course, all civilisations do eventually disappear, usually in less than a thousand years. India and China have been around for an exceptional long time, but will most probably disappear with the Western civilisation, since they are subjected to its social, economical, cultural, technological, scientific, etc, globalisation.
But it is not only invasions that make a civilisation disappear, inner corruption and suicide usually play important roles as well. In the Occident latter seems to become dominant, considering the determination with which its citizens attack, rape, plunder & poison the organism – also called Mother Nature, Gaia, Pachamama – which does bear and feed them.
It certainly might be an explanation for the large economical and labour efforts they spend on the production of weaponry which is able to wipe out all mankind.