One very interesting aspect of the wine tasting profession is the notion of a regional palate. The difference is clear to those who judge at competitions that use tasters from all over the world, or even just from different parts of North America, from east to west coast. There is a definite propensity for those who taste mainly wines from the west coast, whether it is the Okanagan Valley in BC, Washington, or California, to prefer lower acid, “bigger,” more fruit forward wines. West Coast palates also tend to be far more tolerant of higher alcohol wines.
I hope this overview has given you an idea of what's actually going on in wine during malolactic fermentation, why it's used, and how the wine world would be very different without the contributions of these heroic little bacteria.