Sometimes you fall in a place you can't get out of and you need to fly out. Or, as in the place i am now, they have it set up so poorly that you have to fly across a sky platform to get to the house you want to rez and look at. I keep falling and there is no way to fly back up to the platform. I don't understand what the point is for no fly places. I am the type that loves to walk and look around so flying is something I rarely do. But it is certainly nice to have that option when you need it. It seems like its always the sims I am not able to fly in that have their sims set up for so many falls.