Richard was an astronaut. He was often sent on the shuttles to the International Space Station for weeks at a time. One night he was at home with his wife. She was asking him to cut back on the shuttle trips so he could be home more often.
"I wish you would make fewer trips," she was telling her husband. "You're gone quite a lot and I miss you."
"I'm know, honey," Richard replied, "But I need my space!"