Keep in mind that business intelligence involves a lot of interfacing with internal and possibly external end users. The choices regarding technology and implementation will be handed down from above, and if you consider yourself more of a software engineer or a creative type who likes to stay "in the zone" focusing and perfecting your work, then you will actually find BI tiresome and frustrating. Rather than a master chef focusing on the craft, your role as a BI developer will be more like a maître d' dealing with fussy high profile customers who want it all done their way and delivered today. I'm just saying that, depending on your personality, it could seem that way.