Re: Positivity?
Islam does not follow that philosophy. Islam, whether some of my more intellectual friends like it or not, is not a religion of logic, its a religion of obedience.
I think that when we try to find logic in certain commandments, we try to explore the thought process of Allah (swt) behind that commandment. 
. If that logic has not been told to us already, then exploring that could lead to Kufr.
My question to you is this. Are we going to suffer a big loss as society or as an individual if we dont take advantage of the positive impact of music or paintings?