Convince people to buy tons of stuff they probably don't need.
Advertising is a bigger part of your life than water. Okay, maybe not, but it's still a huge part of almost everything you do. Check out the ads on the side of your browser window the next time you're on Facebook. Don't forget TV commercials, billboards, t-shirt brands, personalized company pens, the sides of buses—ads are everywhere. Hey, even this sentence is an advertisement. People don't like to admit that they're being influenced by ads, but it seeps into your brain one way or another.
You'll learn how to influence people into making decisions based on pretty pictures and lovely words. You also won't have to worry too much about grad school, because only a tiny portion of people go on to get an additional degree. The business world can be cruel, but hopping into an ad firm and getting that crucial experience can be your best shot.
If you're worried about the business-y classes like Financial Operations or Economics 560, don't sweat it. You'll be taking a mixture of marketing and communications classes that teach you how to appeal to a wide audience. If you get good enough, you might even get to see your very own ad flashing in Times Square like a beacon. Sure, it would only be in that coveted spot for a second, but it'd still be there.
Percentage of US students who major in Advertising:
Stats obtained from this source.