history: I had planned a bicycle tour with a friend of mine. At the last minute, he was unable to come on the trip with me. I ended up only doing about half the trip and flying home. Sometimes I enjoy being alone_comma_ but not on a long trip that takes me far away from home.
current: I know exactly what you mean.  It gets so lonely on the road.  Have you had to go away recently?
next: This was a while back, but I planned a bicycle trip that went across several states. Although I had a buddy coming with me originally, he ended up bailing and I went alone. I called it quits halfway.