You do, of course. If you're in Devon, you eat locally because you can hardly be eating in Barcelona while sitting in Saunton.
The latest dioxin cancer scare from Germany suggests that this is a good idea. Buying from local farms is best.
For the local economy and for your health for a local farmer will be accountable to you.
And looking at these lovely, brown Devon eggs, why on earth would I want to buy eggs from Germany?
That would be dim.