It's amazing isn't it, how everyone in the western world is used to just clicking their fingers/mouse and getting what they want, when they want it, and at rock-bottom prices. 
And all without giving a single thought as to how that item got there, who grew/raised/made it, or how much it costs to do so.
No, I want to flick a switch and a light/washing machine/tumble drier comes on. But i don't want to have to pay too much for it. I don't want to have to dry my washing outside (yes, I know people in flats etc can't, I'm not talking about them) or put a cardigan on. I want to have all the luxuries I have been used to, without thinking too hard about any of it - not least, the using of the world's resources so you can avoid putting on a jumper.
And as for 'why would you want courgettes in winter?' - my courgette plants, in my garden (complete with washing line) are still producing courgettes. My point exactly - we have no Idea when things are grown, or harvested. Or when they are imported from around the worl.
We could do with this energy crisis, the food shortages. We need to start thinking about how we can live more in tune with the planet.