What issue in society do you think is near impossible to fix?
Alcohol.
Lots and lots of people lean heavily on it and think that alcohol is the spice of their life. When, it contributes to so many problems than it's so-called benefits. We tried, in America anyways, to outright ban alcohol. Problem was that the person who wanted it banned, was too extremist.
Like he didn't think it all through and think just going for the jugular of the problem is what will work. When, it didn't and just made people work around it until eventually the ban was dismantled.
So, since then, we've been putting up with drunk drivers, drunk disputes, drunk abusers and other issues. I still wish we could just slam our hands down at the desk and demand we sit to discuss in how to properly deal with this issue than people proclaiming that it's not a problem.
I don’t think we will ever have a society that is truly saved from class warfare. I think that the upper classes will always exist in some form and they will always oppress the vast majority of the population, with varying degrees of brutality. I also think this is the most important issue in our society and must be dealt with. It’s depressing.
Considering how little we actually know, how much we are still figuring out today, how wrong we once were, and most definitely still are on many things, about said nature, the naturalistic argument is IMHO rather weak. The argument silently assumes too many things, at least with our current knowledge - that human beings do actually have an inherent nature, that said nature is uniform enough across the whole species to make that generalization, that said nature is inevitable and can't be evolved past or rationalized against, that it always was the case and will always be, etc.
If humans have a nature, then humans will always have that nature by definition. “We” might get beyond that nature, but it won’t be “us” after that. It will be our descendants.
And not like “sons and daughters” but rather “our evolutionary descendants”.
As for humanity, we exist in a particular set of inescapable challenges, which define what it is to be human.