you said "Boredom is the worst state for a human being to find himself in." That is a statement, a complete thought, a sentence. One that violates everything else you say. You don't say anything about it being your own personal opinion into later in the paragraph. IMO and "That's just me though" apply to your third sentence only. If you wanted to qualify that statement you would have had to tack a qualifier onto the beginning or end of it...understand?