What are the effects of not taking any humanities courses?

I am in high school but soon I will be going to college. I already have a hard time dealing with the silliness of high school (on an intellectual level), and in particular I have 0 interest in humanities courses (frankly I think literature is pathetic thing to study). I am interested only in math and science.

When I get to college, I plan only to take math and science courses and not attend any humanities courses even if they are required as part of the core curriculum. What are the potential ramifications of this assuming the college is one of the prestigous ones like Harvard/MIT. Will a bad grade in humanities course mean less oppurtunities later on?