What kind of degree will you have?
I've sold insurance before, life/health/car. It is a hard gig BUT it offers you incredibly flexibility and the ability to make a TON of cash, but like Biblebelt said, their is a HUGE amount of turnover. Many people only last a couple weeks. In one big life insurance company I sold for, success was in no way dependent on having any kind of degree. One woman was a virtual high school dropout and pulling in five figures a month, easy.
If your ultimate goal is to get into the insurance INDUSTRY, there are many other office type jobs that don't require selling. A friend is an underwriter and makes WELL over six figures.
However, becasue selling insurance can be the toughest gigs around, simply because of the huge amount of rejection you'll encounter along with the wide variety of people you'll engage with on a daily basis, it offers not only the opportunity for incredible income, but also the opportunity to develop wicked social skills (not to mention creative ways to develop leads) that you might never otherwise learn, even by sarging every night of the week.
Fukk it, you're young, you'll have a degree to fall back on. I say grab your balls and go for it.