Why the nature of things is such as it is? Namaste. My question is 

Why the nature of things is such as it is? 

I think that the question cannot be answered, because it points outside the grasp of our mind, but I am interested in possible deep evidences pro or contra. 

Thanks.
When you say the nature of things i am assuming you mean things being:

1.Impermanent (anicca)

2.Suffering/Dissatisfaction/Dis-Ease (dukkha)

3.Non Self (annatta)

1.Why is the nature of things impermanent?

Because conditioned phenomenon is constantly in a state of flux.Why?Because something causes this to happen than this causes that to happen then that causes that to happen then...and so forth.

2.Why is the nature of things suffering/dissatisfaction/Dis-Ease?

Because the conditioned phenomenon keeps changing.(impermanence).And we keep grasping at it.What happens when you try to hold on to something that keeps moving and your adamant about staying put.You hurt yourself.You stress yourself.Let go.

3.Why is the nature of thing Annatta?

I can not answer this.It just IS.

Both Samsara and Nibbanna are devoid of an Ego.Both conditioned and the unconditioned have no permanent self/Ego.