Making dinner at home is making a comeback. After decades of consumer preferences leaning toward dining out, a new survey shows that American preferences are starting to shift. The new momentum is largely a cost-saving move by millennials, but also a result of an increased interest in health and family time. According to a recent survey, 73 percent of adults currently make dinner at home at least four nights a week, but millennials are pushing that trend even further. Fifty percent surveyed they have intentions to cook at home more often than that in 2018. And 79 percent of teens, or those in the temporarily dubbed post-millennial generation — surveyed that they wanted their parents to cook at home more in 2018. One in three teens expressed an interest in helping their parents cook at home more often as a way to help their family eat healthier. So what’s causing the shift? About…