Dead Letter and the Infinite Yes

I found a letter that read
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 "Our existence has serious side effects"
 Turned on, turned on the television
 
 And it's telling me the world is collapsing
 I think it's coming, oh and it comes so fast
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 I'm hearing whispers of an infinite yes
 And I don't know why it is
 Our bodies are dead
 And why you look so sad?
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 And my therapist said
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 "We've evolved through a series of accidents"
 There's been talk of chemical imbalances
 Restless sense of detachment, nausea and or violence
 I think it's coming, oh and it comes so fast
 I'm hearing whispers of an infinite yes
 And I don't know why it is
 I feel it coming, I think it's real and significant
 I think I think I think a little too often
 That's what my therapist said
 We're alone in this wilderness
 Left to choke on the pills and to feed on the viruses
 I think it's coming, oh and it comes so fast