What does the phrase 'endless trains of the faithless' refer to in 'O Me! O Life!'?

In the last stanza in "Stopping by Woods on a Snowy Evening", the poet describes the woods as lovely, dark, and deep. These words show that the woods are beautiful, peaceful, and mysterious, creating a sense of attraction for the poet even though he cannot stay.

In the poem "Stopping by Woods on a Snowy Evening", the speaker refers to various types of promises in life, especially the responsibilities towards family or society. He has to keep these promises before he dies.

According to the poet, when we rejoice, people rejoice with us. This means people tend to stay with us in our good times but leave us in our bad times.

In the poem "Time, You Old Gipsy Man", the poet offers time a number of things to make him stay. Things he offers time are silver bells for its jennet, a golden ring, peacocks bowing, little boys singing, and sweet girls decorating him with flowers.

In the line "But no man can help you die" from the poem "Solitude", the poet expresses that while success and generosity.attract people, death and deep sufferings are absolutely personal experiences that everyone must face alone.

The main theme of the poem "O Me! O Life!" is to explore the purpose of life and the meaning of existence, even when our life is full of struggles and disappointments.