I guess it may help to divide "spotters" (some of whom are pure "number crunchers" and/or photographers) and the more generic "aviation enthusiast" (someone who is more interested in the aircraft and/or industry)
I count myself in the latter (although I used to collect the numbers at one time aswell) and am definately more interested in the aeroplanes, the industry and watching them being put through their paces at airshows.
For me the interest has extended into flying in them and flying them (having gained a PPL) aswell. Over the years, I've flown in many and various types (the most recent being a Thruster microlight!) and still get a thrill out of it. In fact, I love flying generally, even crossing the pond in a Jumbo (which I will be doing again in about a month).
On the other hand, I have known "spotters" who are actually a bit nervous about flying
