An elderly man's sexual needs

I AM 74 and my wife is 68. We have been married for 48 years and our six children are married, have kids and are independent. My wife had fibroids and had her uterus removed when she was 42.

For the past 25 years I have had difficulty getting her to bed. She simply does not want sex. To make matters worse, she had a prolapse about four years ago. I have asked her to go for an operation but she declined. She refuses to be touched, hugged or kissed, let alone have sex.