You answer the why in college talking progressively harder math classes until you say fuck it and accept that's just how it works, or you become either a mathimation or a math teacher where you dumb everything down and let the next generation ask why, and you ask yourself why can't I afford to live, I should have majored in computer science as you spend your summer as an Uber driver.

I stopped at calc 2 and became a software engineer. My math rival(ex gf in hs/best friends now ex wife who I took all my college math with) became a HS math teacher.