Fifty shades of grey my viewpoint

Some time back I took to reading Fifty Shades of Grey, a novel by E L James. Well to put it simply the book is a test of your intelligence. From one lovemaking scene to another the plot moves on. Sad to say I found it difficult to finish the book. The plot so far as I read it is deplorable. A control freak man makes a horrendous proposition to a 21-year-old self-respecting woman. How she accepts it is indeed a test of your wits. The titillating lovemaking scenes are not worth reading. To put it simply the book is a real drag. I have yet to finish the book, wondering how I will finish the book. The only curiosity that drives me to read the book is to know why Christian Grey became such a control freak? Is it because he was seduced by one of his Mom's friends at 15 and who should have known better what would be the effect of her effrontery on the young boy. It seems in the earlier relationship ( between Christian's Mom's friend and Christian Grey) he was the submissive in the sexual games and in the latter relationship between Anastasia Steele and Christian Grey, Anastasia was supposed to be the submissive. The fellatio described between Anastasia and Christian Grey is supposed to be a high point in their otherwise sadomasochistic relationship. It is difficult to figure out how a man who is otherwise protective and caring could be such a control freak. There is a lack of balance in the characterization. I hope to finish the book and maybe the end will shed some light on why E L James undertook the exercise of writing such a book. Till where I have read the book it is deplorable.