As someone who has had a "line of business" job, I think that those jobs can be tons of fun. Sure, you might have to do some education of the business on how software can help and how software is made, but if you find forward looking businesses, you can really impact a business. Plus you can learn a different domain, which can be fun and helpful to your career (dev + biz expertise > dev).

I ended up introducing hackathons and brown bag lunches to my former employer (a real estate brokerage).