I majored in Business Administration with an emphasis in Finance, but my second choice was Marketing.
I was originally going to go into computer science or telecommunications but realized that those areas change so quickly that by the time I got my degree I'd have to re-learn the updated technologies.
So, I moved over to Business / Finance (and some marketing). My reasoning: Finance and Marketing are two areas of study that can be readily applied to many areas of life: Work, running your own business, and even family life and interpersonal relations! Also, the principles don't really change nearly as quickly in these areas as they do in tech.
As a small to medium sized business consultant I use marketing all the time for marketing my services, or marketing my clients businesses.
Just my two cents.