Summer internships are the perfect opportunity for you to gain work experience.
Before you get too deep into your current major a internship can let you test drive a potential career to see if it is right for you. There is a lot of competition for an internship; but get used to it because finding your first job out of college is going to be just as tough, maybe tougher.
So you need to prepare yourself for your future and finding an internship is just another step along the path.