I know when I just started to learn about The Harley Davidson Motorcycles as what sets them apart from  other bikes;  I  learned the $100 dollar rule. Yes, there is the expense. For everything you buy for a Harley it cost $100.  Sound, Speed, Freedom ...Maybe there's a Wow factor.

With a Harley....everything is just a little more specialized and a little more so.  I do not have a bike myself and am looking with eyes wide opened.   Too big for my own good, I might add. 

There is the other significant appeal about the Harley motocycles.  The more I look into owning one of those beauties!  The more I want one.  So I will take advantage of some of the training rides or learn the ropes before diving in and finding myself on U-Tube, or seriously hurt.  especially because I want to ride in a group and not run into anyone. 
 
The social factor.  They same to attract anybody and everybody from all backgrounds and bring them together into a social network where people would ordinarly come together for any other reason.  The non-conformist and the conformist share a commonality....pretty cool?  Everybody travels and everybody has a blast doing it on a harley or another bike for that matter.  For me it's going to be a Harley.
It's a girl thing.