When we understand the connection between how we live and how long we live, it's easier to make different choices. Instead of viewing the time we spend with friends and family as luxuries, we can see that these relationships are among the most powerful determinants of our well-being and survival.
If I eat mindlessly while watching television, reading, or talking with someone else, I can go through an entire meal without tasting the food, without even noticing that I've been eating. The plate is empty but I didn't enjoy the food - I had all of the calories and little of the pleasure.