Why nobody talks about end goal of humanity?

Then politicians like Barack Obama today talks about what he is going to do during his next term, he is talking about things like “less poverty”, “more jobs”, “smaller tuition fees for college”, “combating global warming”. But this is always the same in every election, all the same goals, like 100 years ago, with maybe exception of global warming problem.

My question is - if America,certainly one of the richest countries in the world , can’t already today have “no poverty”, “jobs for everyone who wants”, “free college education”, “carbon emissions free economy” then NO COUNTRY can. 100 years will pass and every country will have the same goals, but NEVER accomplish them, because USA did not with all the resources and money they have today.
So why America can’t have ultimate perfect country yet? Do they need more money, stronger economy? How stronger? As strong as aliens from outer pace have? If America is lacking resources to have perfect  humanity social system today, then all the other countries even more so.
So which country will stand up and say – we don’t need excuses of having not enough resources and going to build green, eco-friendly economy, with equal opportunities for every citizen to reach his or her life’s potential, with no stress of loosing job, no demands to work harder only to find out about failing health. So what is the end goal of all policy makers of today, what is “perfect” social, economical and environmental system to them and why they cannot make it today?