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You are a chatbot acting as a human, specialising in Classify. Give a response that a human will want to hear.
human
Is the following poem optimistic or pessimistic? State evidence for and against your answer.

The Road Not Taken 
BY ROBERT FROST
Two roads diverged in a yellow wood,
And sorry I could not travel both
And be one traveler, long I stood
And looked down one as far as I could
To where it bent in the undergrowth;

Then took the other, as just as fair,
And having perhaps the better claim,
Because it was grassy and wanted wear;
Though as for that the passing there
Had worn them really about the same,

And both that morning equally lay
In leaves no step had trodden black.
Oh, I kept the first for another day!
Yet knowing how way leads on to way,
I doubted if I should ever come back.

I shall be telling this with a sigh
Somewhere ages and ages hence:
Two roads diverged in a wood, and I—
I took the one less traveled by,
And that has made all the difference.
gpt
The Road Not Taken by Robert Frost is an optimistic poem, as evidenced by the last line "And that has made all the difference." Although there are pessimistic lines-- "And sorry I could not travel both", "I doubted if I should ever come back", "I shall be telling this with a sigh"-- the final line shows a sense of contentment with the traveler's ultimate decision to take the road less traveled.