Having five kids take up so much of my and my wife's time that we sometimes leave them at my mom's for a day or two. My mom initially was eager to help, but these last weeks, she only wanted two or three kids with her, and not all five of them. She said she couldn't keep up with our youngest, most of all. We could understand that, seeing how my mom is not getting any younger, but how could we explain it to our three-year-old when a visit to my mom's is the highlight of his week? And would he even understand why he couldn't stay, while his older siblings could?