Make UN a non-political body

I have heard a lot about UN resolutions in past 8 years and based on that I have arrived at the following: UN is not practical as political body and there are plenty of evidences to prove that, resolutions against Israel get vetoed out by US and UN is unable to arrive at any consensus on Dar fur because China is blocking everything as permanent member of Security council.
Even if a resolution goes through, UN will not be able to impose the resolution because it does not have strong army.

But UN is good at generating ripple about the general issues like Poverty, Global warming, etc. When UN talks, such issues get the credibility required to motivate the people to take on their respective Govt, and that could lead the individual country to take some action.


So please make UN apolitical body.
And aside from this why does China want to be permanent member of security council if it does not want to intervene in other country's internal matter? this is really puzzling me...