Everyone in America is very torn between either loving fifty shades with a burning passion or hating with a violent anger. I happen to love the book series and also the movies. Yes, I know the writing is not what one would call good, but the characters were what drew me in. The thing that makes people turn their noses up at the series is because it's about sex and not just your plain vanilla sex, it's about BDSM. BDSM is an overlapping abbreviation for bondage and discipline, dominance and submission, and sadism and masochism. This is a very taboo way of sex so people will often assume that Christian and Ana have an unhealthy relationship when in reality many people participate in this sex act but never talk about it because of how shameful it is looked at.
People who have not read the books think Christian is an evil man who abuses and rapes Ana but that is not the case. If you actually read the books you would know that Christian had a very bad start to his life and it got worse as a teen when an older women taught him about BDSM and would have sex with him even though she was 40 and he was a confused and hurt 15-year-old boy. As the years go on Christian becomes dominant because it's the only way he knows how to get pleasure and intimacy, both things he had lacked all his life. When Christian meets Ana though he starts to change and see things in a different light and feels that he can have vanilla sex with her but also participate in his kinky sex acts as well.
The point is Fifty Shades is not a series that supports rape or abuse, it supports sexual exploration which is something many people are afraid of because no one feels like they are allowed to talk about it.