How much of this stuff will I use in practice?

Ever since I started college, a big portion of my classmates say things along the lines of "My friend just graduated and he said he never uses any of this stuff" . I just shrugged it off because most of the people that said it were usually the ones that never took the class  seriously; the ones that said "C's get degrees" all the time. I recently started looking into this and reading articles/ watching videos where people talk about their expectations of the job while in school and then what actually happened. Everything I read said the same thing. It's really discouraging.
I LOVE my classes. I really enjoy anything math or science related. How much of this stuff is actually used? I know there are tools to do the majority of the calculations we do in school, but...people make it seem like you could do all the work an engineer does just by learning to use a handful of programs.

So, for you practicing engineers out there, is any of this true? Could you do everything you do if you didn't take all of those physics classes? Are there certain types of engineers that use more math and physics on a daily basis?

-Mechanical Engineering Student (junior)

/r/EngineeringStudents Thread