As a developer, my primary goal is to make software that is useful to people.  Nothing makes me happier than when someone enjoys using somthing that I built.  When I do things to expressly prevent people from using my stuff, I feel like I’m working directly against that motivation.  I think a lot of developers probably feel the same way, and that may be why security has a reputation as being unpleasant to work on. 

Consequently, it ends up getting pushed to the end of a project, or even ignored entirely.  Unfortunately, I can’t think of a way to make this more enjoyable. But hey, some people hate all aspects of their jobs, so I feel lucky that I really enjoy most of the things I get to do in mine.