Once we get married: we are the two wheel of a cart but the wheels are in different size in the beginning. The bigger wheel always pulls the carriage on other direction, this can be taken care by proper communication and mutual understanding.  
This is the gap created due to two different culture and values that need to be compromised. In our culture male is always dominating female because she is the new comer of the house.  Are the male trying to understand her? Trying to give her more room and environment to adjust? Heck not? The new comer has to bend most of the time.
Communication and mutual understanding is the basic key of a harmonic married life which leads to a happy marriage and family life. Do you know what is her best book or the best movie? What is her best food? If you do not know some basic thing about her then you are the one making her drift away. Just good on bed is not enough. To make her ready you need to be a good player. Know some human psychology, you are ready to make love does not mean she is ready too. I mean there must be some mutual understanding and a love to make love.
You wrote: you are happy because finally you are getting divorce. Good luck.
But I have some questions: What did you do to make it?
What are the efforts you have tried from your part?
Divorce is not a baby play; it has emotional string as well financial attached. You will end up paying alimony for life. She will not work or do not remarry; it will drain your wallet. I am guessing you do not have any kids, then there is a big battle and a child without father or mother is like an orphan.

Let’s hear about your efforts on making your marriage better? Without trying is you are running away from yourself.  That is all.