Food was very important. We took all of our meals together. We had morning, midday, and evening meals with six around the table. If the space shuttle was there as it is right now, you would see 13 people around the table.
Some have mastered eating in space better than others. Tim is demonstrating here how you should do it with a bubble of water.
We cannot underestimate all of these psychological aspects, such as food or good company, on board the station.