Overthinking the obvious for an anxous audience:
Given that eating is universal and routine, family meals offer a natural opportunity for parental influence...
...the effects of family dinners on children depend on the extent to which parents use the time to engage with their children and learn about their day-to-day lives.
I make no claim to being a great parent, but as our era of nightly family dinners draws to a close I'm confident it was a Good Thing.
More in the same vein: A family trip and a vacation are two different animals, duh.