Used to think so too, Jack, but when one puts the tree on a sunny and a bit sheltered spot it's doable (for the plant). Quality and the type of soil is important as well. Soil here drains really well (which annoys me more than I'm happy with it/turns 'poor' very fast).
Um also, the climate here is quite moderate due to the sea isn't that far from where I reside. Bet this region is going to produce proper wine (whites/pinks) too in say, 20 years time. It's been said that 'we' are heading towards an Bordeaux-ian type of climate in the future here.
Not a thing I'm happy with though.. I can't stand the heat.
*grabs the Swedish brochure about immigration again* ("