We don't have sex anymore.

"Don't allow your animal nature to rule your reason."  Rumi

Trying to keep somebody that doesn't want to stay is not going to happen. 

 Trying to keep someone who is not worth keeping is also ridiculous.

 Many people have done many crazy things in the name of love.

 We are the information age with more and more people doing yoga, eating right, talking things out, educating themselves and so dysfunction of this magnitude is unbelievable.  

Relationships are not surviving. 

The reasons are obvious unless your in a failing relationship then the reasons are obvious to everyone but you. 

Sometimes its that: You don't see eye to eye

                               You can't communicate properly

                               Your afraid of change

                               You no longer feel attraction

                               Your partner does not show affection

                               Your really stressed

                               Your partner is really stressed 

etc, etc, etc.........

The reason your relationship does not work is going to point you in the direction of what you need to do to either fix what is wrong or walk away.

The old fashioned Pros's and Con's list comes into play.

Why do you stay?

The preservation of the family unit is usually the answer to this one.  "For the sake of the children" is often the excuse used to maintain contact with a person you can't even stand to eat with. 

 (If there are no children get out as soon as possible.  Why are you holding on to a miserable life?)

This is a horrible reason to stay with your partner. 

 If you are arguing constantly, talking at one another with anger and contempt, ignoring one another and treating one another generally awful your children notice this.  

You are teaching by example that misery is the life they can expect as adults.

You are showing them that a couple that does not need to resolve conflict or get along to live together in absolute sadness. You are telling them that adults are unhappy and if they become involved with people that make them feel bad about themselves or life in general its OK to stay with them and reproduce and be unhappy because that's all there is.

That pretty much filled up your Con's list also.  

If your just hitting a hard spot, which happens, but you are generally pretty good together, communicating well and HAVING SEX than get to the other side of your rough patch by getting to the root of whatever the problem is.  

A long term relationship has its own special way of being together.  If talking it out is your thing do it.  If you guys need time alone make it happen, do what it takes to get to the other side, DO THE WORK.  Great love is not something that crosses every one's path. If you have it keep it, nurture it and feed it whatever it needs as long as its within your parameters for happy.  

Not having sex or experiencing intimacy with your partner is one of the signs that things need to change.

Sex is the one thing you do with your partner that you do not share with anyone else.  

SEX gets its own chapter.