what's the meaning of the last sentence ?
‘After people love one another something very sad is left behind,’
she writes. ‘Life remains always life to live, and so is earthbound.
Perhaps, for that reason, life is all the more beautiful, for it is always
permeated with this sadness. Why do tears run down people’s faces
when they see the most basic, human sights? Because to become
one with the earth is the most frightening reality".

Question

what's the meaning of  the last sentence ?
‘After people love one another something very sad is left behind,’
she writes. ‘Life remains always life to live, and so is earthbound.
Perhaps, for that reason, life is all the more beautiful, for it is always
permeated with this sadness. Why do tears run down people’s faces
when they see the most basic, human sights? Because to become
one with the earth is the most frightening reality".

Answer

“人愛一個又一個東西很傷心的留下，”
她寫道。 “生命始終保持活一輩子，所以是鄉土。
也許，對於這個原因，生活更加美好，因為它始終是
滲透著這種憂傷。為什麼流淚人們的臉上
當他們看到最基本的，人類的景點？因為成為
一個具有地球上最可怕的現實“。