The speaker talks about suicide in a strangely calm voice, and that calm is what makes the poem unsettling. He imagines a moment when he might kill himself and tells someone not to be sad, because nothing could have been done. The key line is "Because whats a life / If its without you." It suggests that his sense of having a reason to live is tied to this one person.
At the same time, he says he doesn't want the person to feel "obligated" to stay with him. He ends by echoing their words: "How i feel is just how i feel." It sounds like acceptance, but it also reads like someone who feels unheard and has stopped asking for help. The plain wording, missing punctuation, and short lines make the poem feel quiet and tired rather than dramatic. The title, "Serenity," seems ironic, since the peace it describes is really resignation and pain. If this poem reflects something real for you or someone you know, please reach out to a trusted person or a local crisis line.