Problems in married life???

Many people are having several problems after married life. They are either having misunderstandings or being quarreled almost everyday. Some couples have been facing the problems to having babies or other fertility related problems. Some are not satisfied in sex with their couple.Think deeply, why such problems come to people's life? What is the real cause behind such problems?
    To live with happiness is everyone's right.Then, why should anyone be worried? If you are having or facing any of problems, please share with us by writing in detail, we suggest you...