I think the worst feeling in the world has to be feeling homesick and not having a home.
I called my friends voice mail tonight on my way back from the floor: "Hi, Its me. you're not going to believe this; I'm so homesick that I went onto the internet to check for airfare, then I realized I don't know where home is, so I just sat there looking at the screen not sure where to go...
I just wanted to hear your voice in hopes of finding something familiar for a moment. . ."