Even though most of those career paths don’t requires one to derive “pages and pages of calculus-based equations” on a daily basis, there is still a reason for learning those things. They build the foundation upon which all of the higher courses and all of the relevant engineering software are based. It’s not about what you will use day to day. It’s about what gives you the right basis to use what you actually will day to day without having to think too hard about it. Otherwise you run a greater risk of garbage in, garbage out.