It depends on who you're talking to. If the other station is operating from an exotic location, you're going to want to know more about the way of life there. On the other hand, if the operator lives a few blocks away from you, you might talk about local event. Comparing equipment and license exam experiences have been known to start many good conversations. There are many nets, or regular meetings on the air of Hams with common interests, that you can get involved in.
Many hams own portable, handheld equipment.
But fixed Amateur Radio stations can be operated off generators when necessary, and hams practice doing so every year on Field Day. But Hams have their most important role during natural disasters and national crises, when they are often the only means of communication between victims and their families', and the sole information source for news stations. The Gulf War, Hurricane Andrew, and the Oklahoma City bombing are some recent situations hams have been involved in- always free of charge. The difference between the two licenses is in operating privileges. Novices can make contacts worldwide using voice, Morse code, and some data modes.