Maslow’s hierarchy of needs is valid on a sociological/cultural level. It begins to break down as it is applied to individuals. Personal values become increasingly altruistic as morality increases.
A father may starve to provide for his children.
An artist may forego personal comfort to pursue artistic perfection.
An entrepreneur may postpone all sorts of personal gratification to fulfill their dream.
Altruism is only one aspect of human dynamics. Starvation, discomfort, lack of hygeine, addiction and other forms of self denial can stem from a wide range of personal dynamics.
Maslow’s hierarchy of needs
Personally, I think the Peter Principle has more application.