When you're old enough to repay
But young enough to sell?

from Neil Young – Tell Me Why Lyrics on Rap Genius

Meaning

Owning property is a hallmark of age/death — something that ought to be avoided. To quote from Thoreau’s Economy:

Pray, for what do we move ever but to get rid of our furniture, our exuviæ: at last to go from this world to another newly furnished, and leave this to be burned?

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