Is there any advantage to cooking beans in a pressure cooker, besides saving time? I cook beans quite frequently, and typically soak them overnight then cook them the next day.  I don't find that particularly laborious, so I've always wondered why people use pressure cookers. Are there any other advantages besides the time they save?
Besides what Layne mentioned :

If you're at extreme altitudes, you may not be able to get things hot enough to cook.  A friend in Boulder, Colorado once mentioned that she can't cook beans without one.  (I don't know if that's technically "too long to be practical" or "completely impossible", though)

Also, for pressure cookers that don't release steam as they're cooking, you prevent the aromatic compounds from leaving, resulting in more flavorful food.