Growing up, dad would get home from work about the time we got off school and had dinner ready by the time mom got home. Until high school, we ALWAYS had dinner together. Once I hit HS, the only reasons to miss dinner was being out with friends, school events, or work. When I moved back in with my parents after college, they never ate together any longer.
When I'm home in the evenings with my sister and niece, the three of us sit around the table and eat together. Sis says she's going to try to raise the niece always eating dinner at the table because she has so many great memories of family around the table, squeezing in, passing food across, and stealing drinks from each other. (It's a longstanding tradition, my sister didn't pay attention very well at dinner, so my mom would engage her in conversation and then brazenly drink right out of my sister's cup. We still do it at restaurants sometimes.)