But, we need to learn/experience in order to survive in this problematic world, if this world wouldn't be created at the first place, than there would have been no need of such experiences or learnings. kinda all just useless, isn't it ? Thus again the question stands where it was. 
If the world wasn't created in the first place, we wouldn't even be having this conversation, so there would be nothing to figure out.
The world is what it is. I simply do not accept your assertion that it is useless. "Useless" is your judgment call. There is no reality/beingness in "useless". For me, there is value (another judgment call) and that value is experience.
I do many things for the experience.
I am painting the interior of the place that I live. I have the experience of both determining how to accomplish what I would like and watching it change from looking less than I would like, to looking so much nicer. As I finish parts of it, I have the experience of pleasure in a job well done. I also have the increased sense of beauty in my surroundings to enjoy.
I must eat to live. However, how I chose to experience that is up to me, and my interaction with the reality surrounding me -- like my finances, time, ability, what food is actually locally available, etc.
I can eat something tasteless simply to sustain life. That is a choice I can make. I can experience food and the preparation of food in many ways -- with love of the experience and enjoyment of cooking and eating nice meals, as a chore and something only done as an obligation to the needs of myself and others, as a fine dining experience in a restaurant, as a fast-food, grab and go sort of food experience.
The value in the experience for me is determined by me.
