I want to go to graduate school!

[Prloko]

There is no reason to get a business undergraduate (BSBA) if you want to go later on an earn an MBA.  It might be helpful if you were 22, had no real work experience and just graduated with a bachelor degree and wanted to go straight through - but if you have even a few years work experience (and all jobs are in some type of business) it makes no practical difference.

Many people who don't have a business based bachelor go the MBA route specifically to obtain the business based credentials there later careers require. In many fields a better suited bachelor/MBA would look better than business, business, business (not well rounded education). 

Wow, I have to disagree, especially with the last comments. Having a business undergrad and then getting an MBA is like learning a lot about something and then fine tuning your skills to an elevated level. This shows your desire to increase your knowledge about business and encompassing as much knowledge through graduate level work by rounding out complex problem-solving skills, strategic leadership acumen or learn some additional skills around economics or operations above and beyond undergraduate degree

Most employers look highly upon this.

Agree with Dan here. While a separate Bachelors and Masters in different areas may be complementary, that is not always the case. A Bachelor of Engineering will commonly get a Masters of Engineering. Sometimes a Bach of Engineering will get an MBA. It all depends on your current journey and your planned endgame.