Even if California had infinite water, there's something kind of "sad" about losing seasonality of various fruits and vegetables - it used to be that "strawberry time" was worthy of festivals (which still remain in many areas even though strawberries are available year-round at the store). And if you find a local place that does grow in season, you find that what we get at the stores aren't necessarily as good as they could be.

Shipping produce across the country (and across the world) has been a net negative for taste.