I posit a fairly simple explanation, Jon. Spirituality and/or religion. (They're one and the same to me, but I know some people are sensitive to the term Religion, hence I offer both).
And no one worry--you don't have to be the slightest bit either spiritual or religious to agree with me, or at least see the point I'll make.
I think it all comes down to that hypothetically, on a non-spiritual plane, you only use data. Nothing else matters. If it can't be quantified in a scientifically observable way, it doesn't matter.
Hypothetically, on a spiritual plane, you have a lot more than that. You believe in another dimension from whence we cannot necessarily gather data (or the data we gather isn't something everyone agrees on the measurement of), therefore, motives......methods......goals.....values......conclusions.....They will all be different between the two hypothetical persons.
Of course what Doc said is also true. Even if we all received the exact same information/data in exactly the same way, we'd process and interpret it differently. I was telling my family the other day how fascinated I was about how 2 human beings could interpret the capitol riots vs. the BLM riots in 2 exactly different ways. One person concludes "Gee, the capitol people got away with murder". The second person concludes "Gee, the BLM people got away with murder". And they both observed the same events.
However, I think even if we all got the same set of facts, presented in the exact same way, otherwordly beliefs change everything.
Two parents can be presented with the exact same fact: Do ____ and you will reap maximum benefit. But if one parent believes in God and the other parent doesn't, then "benefit" is going to be interpreted differently, some people are focusing only on "can"; others are factoring in "should".
Because not everyone is strictly utilitarian/hedonistic, we will never agree.