It sounds like you and/or your wife have lost touch with one another. Some of this may have been through hurt and disapointment which has caused walls to form. More so it sounds definately from your wife's view. It doesn't mean you both don't love or care for each other, you have just settled for live as is.
You must find what really makes your wife tick. You need to pursue her, woo her, romance her, make her laugh, make her cry (by her knowing you understand her). Men are geared to pursue their love such as treasure, and women love to be treated as they are treasured.
I would first recommend you to read "the five love languages" by gary chapman. Find out what love language you speak. Find out what love language she speaks. Men will respond by the love language that speaks to them, when their wife speaks a different love language. Then the men don't feel appreciated, the women still doesn't feel loved.
Summary on the 5 love languages:
1. Words of affirmation
2. Quality time
3. Receiving gifts
4. Acts of service
5. Physical touch
another book I would recommend is "the two sides of love" by gary smalley and john trent. This book will help you to understand 4 basic personality types. It helps you to better understand how people are wired.
It amazing when you understand these principles, you better identify peoples strengths and weaknesses.
Women are wired to be more emotional than physical. Men wired to be physical than emotional. If you meet the emotional needs of your spouse, she will feel a bond and meet your physical needs.
I hope you will find the answers to make your marriage strong.
Best wishes,
tom