There is a Yang, then always a Ying;
There is a matter, then always an antimatter;
There is Convenience, then always an inconvenience.
Explanation,
When one asks for a convenience for oneself, then there is a resultant inconvenience to other.
Example;
Scenario: two cars are crossing a single lane bridge, and meet at the middle,
When you ask other car to let a way for your car to pass, then other car needs to take the inconvenience to back off.
You may ask, why single lane bridge. Then I will tell you, if it is not a single lane bridge, you won't need or even think of having this convenience, which is selfish for the one to ask other to do the inconvenience.
And one more thing, both party are not obligated to comply to each other's convenience.
Only the selfish people will find way to bully the kind people in order to comply to his act of selfishness.
