Unless you are getting a rate that blows your current rate out of the water AND you plan on having your student loan around for a very long time, I would think long and hard about not refinancing your student loans. Your loans can not be forgiven if you are in one of the fields that has loan forgiveness. Your loan can not be discharged in the event of your death or if you become permanently disabled, so your spouse/family will have to use some of your monies to still pay off the loans.
I paid my student loans off 7 years ago. I threw all my extra money at paying them things off. I was tired of lugging them around for years and losing part of my pay checks to them each month. One of the best decisions I ever made.