People go round at incredibly high speeds flying within heavy metal birds that other people designed and built........and you don't think its amazing? Have you ever actually stepped back and looked at the world? But I see you are thinking of plane spotting. Then it is even easier to explain. read more
People collect discarded shopping lists for goodness sake. There is virtually nothing so strange that some people wouldn't want to either look at or collect. If you have no hobbies which someone would find dull, then I suggest you get some. read more