My girlfriend and I enjoy two-up because we can be close together. I travel a lot and being on two bikes would mean she's not holding on to me for hours. She loves riding pillion and even tho she is getting her own bike, she still wants to ride two up for the long trips.
Anyways she act as the look out, photographer, money handler (for tolls or parking), pr (I'm not the most skilled in the social department), and I'm sure I'm forgetting something
Whatever can go right will go right
2005 Yamaha FZ6 (the faster blue
1995 Honda Magna VF750C (sold)