why?

why must it be that someone has to be in the wrong?
why must 'not understanding' be known as 'doubting'?
why must a fight always end up being hurt?
why must a quarrel always end up in tears?
why must the word 'sorry' be part of two?
why must you never ever say 'break up'?
why must we suffer for our mistakes?
why must we have a past?
why must we love?
God knows why.