What is the correct sentence? – Mini contest #5

Man is mortal, this world is mortal. If you look at this place, nothing will last forever. You have to live for a while and then everyone has to go. Man has come into this world alone and will leave this world alone. But the time he spends here, he needs some companion.14 letters of our competition together complete a similar sentence.
I think this is the right sentence.

Only a single lonely standing stone stood like a sentinel with seabirds for company

These are different words but complete a very meaningful sentence that covers our entire life.
If I see this in your life, I do not fit anywhere. Unless my family is with me, be it my parents or my husband, without them I am alone like a stone alone in the sea waiting for sea birds for companionship.
Just like a leaf attached to a branch of a tree, it is a part of a tree, but as soon as it breaks from the tree and falls in the wind, it is carried away by the wind and has no value at anyone's feet. It gets trampled or falls into the garbage heap, and its life ends.

At the end I invite @ruthjoe,@olesia,@kyrie1234.