Sorry, as a farmer you have a very clearly defined purpose (and it might be more implicit than explicitly said out loud, but it's very clear nevertheless). And that's to make sure that you have enough to eat for your family and your animals, and enough to sell, and enough seed for next year.
That's why there's no ruminating for a purpose - it never comes up, because it's so clear. And that's why we're often quite rudderless once the basics are secured.
Can’t you say this for every activity that humans undertake? As a cleaner, you have a very clear purpose: to clean toilets so that you can make money to provide for your family. People can feel a sense of purpose for almost anything, but the fact the you theoretically could come up with a purpose for an activity doesn’t mean they automatically have the sense of it.
That's why there's no ruminating for a purpose - it never comes up, because it's so clear. And that's why we're often quite rudderless once the basics are secured.