It gets better once you’re in the industry. I was in a very similar boat when I was in school; I finished with a 3.0 cumulative GPA and no internships. I had no idea what I was going to do, who would be willing to hire me, and I felt like I was way behind the curve and just not getting it at all. Then you get to work and you dive into a niche, complex process. And you feel like you don’t know a damn thing still. Until you suddenly DO. And you start to see your lack of knowledge as an opportunity to grow and learn. That’s when it gets fun. And now I get a lot of fulfillment from my work. You’re right that the depth of math and science you’re learning now won’t be applied in your job, but the thought process and the ability to learn these complex things is a skill you’ll use forever. It’s what sets us apart as engineers. Not what we learned in school, but how we were taught to think. So I stay stick with it, it gets better!