A good college GPA is important for many different reasons. The most important being able to get scholarships due to having such a great GPA. Its also good when applying for different programs and internships. Most of those scholarships and internships require you to have at least a 3.0 GPA, but of course a GPA higher than this helps you stand out from the rest of your colleagues. So strive for the highest GPA you can possibly get, but don't be discouraged if its a little lower than this, you may have to work a little harder, but the opportunities are endless you just have to go looking for them.
A good GPA is super important for your future opportunities. The higher the better. I push my daughter to try for a 4.0, if she ends at a 3.5 I'm happy. Aim High!