I like Trek and in particular TNG in part because I don't think it's entirely realistic for how we could live today but provides well-done, thought-provoking ideals, some that we should live by already and some that we can make progress toward.
I give the first season credit for attempting to present a future which is different than our own present. However, some of these differences are things I would hope we never obtain, and I personally see as negatives (the differences weren't all first season).
People will have no fear of death. It's considered odd that a child would mourn the death of a parent. People will have no desire to have possessions.
Those are just a few examples.