Is an unborn fetus a person or a cluster of cells?

Is a transgender woman a woman or a man approximating phenotypical gender characteristics of a woman?

Is sex under 18 capable of consent? Under 16? Under 14? In Spain it was 13 until only a few years ago, where is "the truth?"

Prostitution, gambling, drugs? Truth?

Almost all of the most contentious issues are not unresolved because of a lack of education, they're unresolved because of inherent moral conflicts worthy of negotiation. (Age of consent isn't really contentious, I just wanted to show something that most people consider to be obvious or a given not being necessarily resolvable). If we were to simply convince more people that a woman's right to bodily autonomy supercedes the unborn's right to live, or vice versa, we would have only really succeeded in indoctrination. Neither position is "truthful," it's always just an arbitrary moral elevation of one violation of consent over another.

I think the only issue even close to approximating the simplicity you've described would be climate change, but even then there is a wide chasm between the role people believe that the state should play.