|Mara has a funny way of sneaking on you.|
According to Buddhist lore (as well as that of Hindu, Jain, Christianity, Judaism, and probably Islam, since it's Abrahamic and, some say, dreamt up by the Vatican), human life was previously much longer, and it will be again in the next Golden Age. Average lifespan is cyclical through the ages (yugas) of an aeon (kalpa). How short does it get? As brief as ten years. How long could it get? That's the mind blowing part. It can stretch out as long as 80,000 years.
That's no reason to be happy because it's all relative; compared to the average lifespan of the devas, 80 thousand years is not very long, and the pleasures the devas (the Greek type "gods") enjoy are far superior to human pleasures, and they are all mixed up with the same kind of nonsense we have here. But who believes the ancient sutras anyways?
Because things are falling apart at that level, rubbing away constantly, on the macro level we eventually see change and transformation. But we do not only cling to the hut, we cling to every moment of this experience, this life, this identity when it's falling apart so fast that we could hardly keep it together to remember what we were in love with before we're onto something else.