Something's missing

Robert and Emma are flying back to the UK today to spend a couple of weeks with their grandparents. This is my first taste of being separated from them. Even though its only for 2 weeks, and I know they are safe and will be enjoying themselves, I felt like a piece of me was missing after they left. The house is eerily quiet. Everything is in its place. The countertops in the kitchen are free of clutter and are clean. The kids bedrooms are tidy. There's no dirty washing on their bedroom floors. I don't keep having to move their various games and books before I put my cup of tea down on the table, or trip over their shoes in the kitchen. Its weird. I'm not sure that I like it....