In poem 51 of leaves of grass, whitman's speaker says, "do i contradict myself? " why does he ask this question?

Plz first person to respond get brainest read the passage. i pictured myself lazing on a stretch of white sand, a gentle blue sea rocking before me and palm trees rustling behind me. i could go for that. "just think," added josh,"no freezing rain or sub-zero temperatures." "no tornadoes . no blizzards," contributed kayla. "just lovely, sunny days." which provides the best textual support for the claim that the propose of this paragraph is to entertain?