I think presentation is very important. I make my first judgment when I look at my plate. A beautiful arrangement tells me that the cook really cares about the food.
I cook for two most nights. I don't get home from work until 6 or 7, but I still make a nice supper. Most nights we don't eat at the dining room table, we sit at the counter/island in the kitchen. And during the week we have quick, simple meals. But I plate our food as prettily as I can. No, I don't carve vegetables into flowers or make 12 inch mountains of piled up food, but I arrange, sauce, and garnish enough to make my plate an invitation to taste. I know a lot of people garnish for guests, but not for family. But I think it's more important to pay attention to the details for those you love as it is for guests.
Here's a simple example. Make a sandwich wrap. Put if flat on a plate. All you see is the bread. Cut it in half and put both halves on the plate, you still see bread. But cut it o the diagonal, and stack one end on the other, and you expose the filling in an attractive way that says "taste me". It takes no extra effort, but it makes a world of difference on the plate.
Another one - put a white (cauliflower) soup in a white bowl with a spoon doesn't look inviting. Put the same soup in a colorful bowl with a few chopped scallions and some crackers on the side, and it looks like something special.
they're the same food either way, but one is so much more inviting than the other. One says "I care."