Common Misconceptions: Immaculate Conception

I hate when the media continues to misconstrue the meaning of things and how it propagates the culture. And I'm not even Catholic. And barely Christian. Is Christian non-believer a denomination? Non-Catholic Christians aren't even supposed to believe or care about the immaculate conception according to doctrine. So why do they always get it wrong?

Immaculate conception is the conception of Mary, the mother of Jesus, through normal heterosexual vaginal intercourse, but without the stain of original sin, and not the virginal conception of Jesus by the said same Mary and the Holy Spirit. Original sin being the result of a certain garden, a certain fruit of knowledge and experience (likely a pomegranate), a certain fall; being the reason we're all going to hell if not for His sacrifice. Now only most of us are going to hell.

Now was that so hard to understand?