marital disharmony

I am reading John Murtagh and I find one of the topics pretty relevant to me.

I will eventually be in need to deal with families especially if I end up a general practitioner. Therefore, I have to know and understand the common problems that happen in the family and their etiologies. Certain explanation in the book reminds me of my own family. 

Some words hurt. But they are real. So I shall not avoid but to confront it. 

Parents. They don't talk to each other like they used to. They don't care for like they used to. They don't act like they used to. Sometimes they look like strangers to me. They never seem familiar to me anymore. Something must have gone wrong. But problems must be solved because our partners, those are people who will stay with us till the day either person dies. Isn't this a generally accepted assumption to every married person since the day they got their wedding rings worn on their finger and after they read aloud their wedding swear? 

I have not been so emotional to these. Not till I spent hours and days in the wards, seeing and talking to patients of victims of marital disharmony. Nobody is happy. But to people who are suffering so much in hospital beds that they no longer have the freedom to walk home and to stay with their loved ones, to enjoy their pastimes together, I salute them because they still fight hard to live despite all these, just because they feel that they are accountable for the people who pray for them. 

When I go home and I see people who argue over a tiny matter, and because of that they stop talking to each other, I feel nothing but pitiful, shameful and sorry. I preserve my judgement but I believe there are more important things in life than 'playing games' with each other, inflicting bad emotions and creating disheartening scenarios. What do these people get in return? Do they feel better after an argument with no outcome? What else besides harm and sorrow that they would get? I want to bring these pitiful souls to the hospital. I want them to stay in the ward for just 1 day. I want them to talk to dying patients and patients who can't survive without having tubes hooking on their body. I have no intention to bring about any dismay. All I want is for the lucky souls who can still walk and carry out their daily life as they wish to realize that there are better things to do than to get into an argument. These people, they are not people with no education background. In fact, they hold important positions in the society. But poor souls, they do not see the purpose of life. If they do, they probably would not want to waste their time feeling sad and depressed. 

46% of Australian marriages end in separation. (This is a number taken nearly a decade ago.) Living in such an advanced country yet people do not see why they are living. What are the common cause of marital disharmony? Let's see: selfishness, unrealistic expectations, financial problems/meanness, not listening to each other, sickness, drug or alcohol excess, jealousy, fault finding, driving ambition, immaturity and poor communication. Among these, apart from financial issues and sickness which is less likely modifiable, I don't see why people cannot change to make a better living? 

I am 22 and I have promised myself not to end up like the bad things that I see now. Life is short enough to see all its beauty. Why still waste time on creating negative feelings in life?