Sanders isn't removed from reality at all... Most, if not all, of the things he is proposing the US should aim for are things which already already exist is most other developed nations. He isn't proposing stuff that has never been done or ideological mumbo jumbo.... There isn't a rational reason the US, the most powerful nation in the world, should have less stuff than other developed nations. I mean, you have plenty of european countries with universal health care, universal access to universities (if you are accepted of course) and a number of other services while all of that being sustainable. What makes those places so much better than the US that for the US to have the same things they would need a tree which grows free stuff? The US is the only developed nation in the world where their right wing argues against universal health care. In turn in other developed nations univesal health care is simply a basic fact defended by even the right wing. Sanders is a social democrat, his "socialism" is more like barely center.
I agree with that.
But i would like to add that it is harder to install some things in the US (because we have to take into account how big the US is, that its system gives its different states a lot of freedom and that its different parts are more divided than in the smaller european countries).
It will be a long struggle until a universal healthcare system is running smoothly.
But it has to be done. A lot of effort has to be done for social issues in the US, because i think that this is its most staggering flaw.
An America with a fairer justice system and exspecially better regulated prisons which put effort into getting the people back into society.
An America which puts effort into building up low income and high crime districts.
An America which, to put it into known emotional phrasing, does not leave a child behind nor its parents.
An America in which there actually is a chance to be a low income worker and become wealthy.
That would be much closer to the image the US once liked to give itself as the best of all possible nations to live in.
I would see a chance in clinton's term to at least be a little step into the roughly right direction on these issues (even if i would like sanders more, but it is not going to happen).
I would sure as hell see cruz or trump going far away from that ideal.
Europe could even help with financing those things by enabling the US to diminish its military budget (because the US wont have to use as much money as it does if the other nato partner are a bigger help), but that is also a thing which is probably not going to happen to a significant degree (even if the british actually are reliable partners and germany at least promised to take a bit more responsibility inside the nato).