Yes, Star Trek or Mass Effect humanity is possible if we make it a priority but a large portion of humanity thinks it is ok to profit from suffering, purposly stop people from making life better, or look out just for themselves. I can see it in the future because there are groups out there trying to make things better and a fundamentally changing socity. The requirments for the perfect society with the stipualations listed are:
Universal Healthcare
Free or extremely subsidized higher education(Basicially a public higher eduction like public schools do for k-12)
Nature concervation akin to what saved the Great Plains and Mid-west after the dust bowl
A large(but not totalitarian) police force (one that is there to keep actual crime down, not the people so you can walk down the darkest back alley and feel totally safe)
A military that is similar to the ideal of WWII (good guys taking down the bad guys, the right way not the easy, dirty way)
Free speech (goes almost without saying)
These are basically Star Trek ideals but with profit seeking motive. The reason for this is communism does not work except in very small group and it helps inovation for the majority if there is a gold plated carrot on the end.
This will create the closest thing to a "perfect" society as possible but one of the greatest things about humanity is the fact "perfect" to a human is subjective. Previous attempts at creating a "perfect" society have said that genocide, the removal of free speech, and genetic manipulation are ok but they all ended horribly, ex. Holocaust, dictatorships and ghettos, Khan Noonien Singh. Frankly, an imperfect society is the best, one that has is similar to a bell curve where the really good and the really bad are on the far ends with the vast majority in the center. An imperfect society knows it is not prefect but a good society, similar to the suburbs and the majority religous communities, i.e. churchs, mosques, synagogues, etc. Imperfect societies are more perfect than "perfect" societies.
My only hope is that we achive something similar to the society of humanity that is protrayed in Star Trek.