Just think about having to climb such a precipice--even if you ignore the danger of the journey, there's not a sign of life up there, daily necessities are all hard to get, and there's even less for leisure. Who would want to deal with all that?
想想要爬那麼高的山，沿途的危險不提；山上渺無人煙，衣食住行都不方便，更缺娛樂，誰願受苦？