Recall the last four lines of the poem: “Life doesn’t frighten me at all / Not at all / Not at all. / Life doesn’t frighten me at all.” What effect do these lines have on the meaning of the poem?

Well, just from those lines it looks  very eery I guess you could say, or even that the character has some mental problems. It has a very darkening effect on the poem.

Explanation:

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answer; analytical,creative and practical;