That's interesting bazzais - what's wrong with running a "lifestyle business" then? I mean, if you run the farm as a business, but it doesn't make much money, or even runs at a loss subsidised by yourself, what's wrong with that? At the end of the day, all small farms must surely be "lifestyle businesses", since it's clear that there's more money to be made per hour elsewhere, hence why would anybody do it if it wasn't as the result of a lifestyle choice?
I can see that it could get complicated in that something like meat or eggs for your own consumption would become a benefit in kind from the farm to you for example (though you could probably offset that against the monetary value of your labour in producing them. However, to come back to my first point, what would be wrong in running the farm as a business in any way you like, whether it makes money or not?