Of course many philosophers disagree and arguably terrible things were done with such mindset[3]. The point I am trying to make is that if you need context then you cannot have a universal rational decision, thus you will be imposing your own morals possibly over others. You might be fine with it, but now you relativized morals.
PS: I highly recommend the Great Lectures on Audible on philosophy. Specifically "Why Evil Exists" and "The Modern Political Tradition: Hobbes to Habermas".
The first one is more on the religious part, but provides great background on moral and ethical thought starting with the Gilgamesh all the way to XX century psychology.
The second is a great over view of western thought, with philosophical counter arguments on thinkers I never heard of, but which i find essential to help form one's thought on how Western society must progress. That book changed my life due to the sheer exposure of captivating ideas even sometimes conflicting. I loved Rawls but consider myself a freedom guy. Now my thought is clearer: How can we find a way to measure that further distribution would harm the most disadvantaged? This is still open but a more practical question, that i can use on evaluating certain concrete policies. Example:
In Portugal the minimum wage has been increased to the point it matches the average salary. A person who did not train to specialize and works in a coffee shop earns similarly to an engineer that spent his first 24 years studying. This is harmful because without differences in rewards, higher difficulty but needed professions will not have enough practitioners. Therefore society as a whole will suffer because it lacks trained specialists to improve the untrained coffee worker's life. "Bam, simple as that". It soothes me in the face of the torrent of events and ideologies pushed upon me all the time.
[1] "Act only according to that maxim whereby you can, at the same time, will that it should become a universal law." https://en.wikipedia.org/wiki/Categorical_imperative [2] https://plato.stanford.edu/entries/original-position/ [3] https://en.wikipedia.org/wiki/Eichmann_in_Jerusalem#Eichmann