Why do we break?

I see Ego as the main beast to ruin relationship.
Ego is like an a**hole ... everyone has one.
As we grow... Ego grows ...
Very few are able to draw a line between Ego and self esteem.
Most of the relationship that break today are due to ego clashes.
Why do people find it so difficult to compromise on ego?

Each one of us is unique in himself.
Everyone knows it but in real life we rarely recognize it. We keep searching for similarites.
Actually we are barely interested to give time or effort to understand other person.

Like some people have 'Who cares' attitude. A few have 'Care always' approach.
I am still to find which one is correct. Both these feelings need to be moderate - balance.

Next is expectation.
Whether you want or not, expectation live with us. Unnoticed. Unknowingly ignited.
What we fail is to communicate and express our expectation or atleast to express it in a right way at right time.
I definetly build expectations when I do good to someone.
Specially expectations are more from dear ones.
Failure of meeting expectations gives birth to pain and anger.
Anger - root of all evil.

The start of every relationship is pleasant but as time passes we start taking things for granted.
Till now what I have seen is that getting too close to a person gives rise to conflicts.
Maybe maintaining a little distance can help.

These are just thoughts. I myself is immature and need to learn.

There are tones of books and golden rules on each of above .
However as Shakespeare said 'It is easier to teach 20 what to do than to be 1 among those 20 to do same.