Quote from Lily in Subway Wars
Lily: Sweetie? Are you okay? Robin: No. I am done with this city. It wins. I just want to move somewhere new and start over. Lily: You've had a rough year. But you're tough. And I love you like crazy. If you left, I'd have to follow you. And Marshall would follow me. And Ted would follow him. The only upside is that we might get rid of Barney.