My fiancée says that my interest in the RAF in WWII is an obsession and I used to disagree but to be honest now she's probably not too far wrong in some ways. I collect everything about it: books; memorabilia; everything. But saying that I do have a number of other hobbies which I love and which take up my time: fly fishing especially but I'll admit it doesn't get as much time devoted to it as the RAF one!