questioning life choices

why does rational mechanics even exist I can't even make this up anymore, why??? so much??? vectors and differential equations??? and whyyyyy???? I have an exam this monday and probably won't make it but hey at least I tried right

did someone else suffer with this subject or nah (for the US i think it's called Statics and Dynamics? my teacher uses the Theoretical Mechanics - A Short Course by S. Targ)