This World is full of things that dont go as you wish. The longer you live the more you realize that reality is just irrational, because how come we call ourself human's but act so inhuman ?
The fact that we dont learn from our mistake's will lead into self-destruction.
The selfish desire of wanting to maintain the PEACE causes WARS... and Hatred is Born to protect LOVE.
to get more into it u can think like
"Wherever there is light there are also shadows" As long as the concept of "winners exists
there will also be "Losers"
Its a causal Relationship that can't be avoided.