Is Sex Everything in Life?

Is sex everything in marriage?
Recently in a TV show, a lady spoke about having some urinary track problem that she had to be operated several times for the past 10 years. She have managed to marry off her daughters and sons and currently leaving alone with her husband. For the past few years she has been struggling with her pain together with her husband’s sighing. It seems like the husband is very much frustrated with the wife’s disease and the frequent hospital visits have tired him out. When asked by the psychologist whether her kids are consoling her, her answer was that they are all settled out country and will call her often but they are also sick and tired of her problem. The actual problem here was that she is not able to do her ‘’womanly’’ duty towards her husband since a few years ago and without ignoring the fact that she is incapable due to health issues, their relationship have deteriorated.
I am wondering something here. If the husband had the same problem and the wife does the same thing, what will he feel? Is sex everything in life? If a husband (not all but mostly from my point of view) doesn’t feel satisfied with their wife at home, they tend to find outside pleasure. All that I am asking is, if your women feel the same with you, will you allow her to go and find her own pleasure with some other guys?
What forms a beautiful marriage life?It is traits like pure understanding, trust, love, care, commitments and time devotion.The husband should have known that there are so much other things to enjoy in a marriage. 
*A man’s heart can be touched through his tummy…A wonderful cooking can delight any men on earth
*A pleasant evening walk with stories of what happened the whole day with each other is a nice way to end up the day
*Cooking together and enjoying the time spent together
*Just lying down with each other’s company and cuddles is a great way to feel the love
The list goes on…but all these can only be realised if the guys out there know how precious a women can be in their life. The only flaw in women is that they tend forget the power and devotion they have within them.

A small note: I realize that not all the women are good and not all the guys are bad. There are people making mistakes here and there regardless of being women or men but this writing is dedicated especially for women like in the story, for those who struggle to bring up their family, for those who have gone through mental and physical torture in their life and for all those women who have forgotten that throughout all their life spent as a devotion towards others, they to let go of their own self.