If utilitarian philosophy is about the greater good, to some extent happiness can be quantified.
I like the quote I found from Henry Sidgwick “if my happiness is desirable and good, the equal happiness of any other person must be equally desirable…”
Axioms, premises and cohesive arguments are the building blocks of philosophy. Spinoza set out his axioms and definitions at the start of his work on Ethics. Here is a link to them…http://www.faculty.umb.edu/gary_zabel/Courses/Spinoza/Texts/Spinoza/e1a.htm
As you can see, philosophers are precise about their arguments. Moral philosophy and ethics require precision in order to establish fundamental truths about the way we should live.
There are plenty of life coaches and how to live guide books that deal with the everyday aspects of modern living. But they fall short of addressing how to live a good life, how to be a good person and how to maximize happiness and wellbeing for society as a whole.
In the recent pandemic those questions have greater relevance. Countries have handled the crisis with varying attitudes, from ignorant God will protect us nonsense to communities working together to isolate, track, trace and eventually eliminate the virus from their borders.
High-minded leadership is a rare quality, but New Zealand and South Korea have shown what a difference it makes. Utilitarian concepts have a part to play in global politics, ensuring that we do our best for future generations and respect the environment that supports all our lives.
odespinner 