HR of today is unethical and unnecessary.
It used to be that all employment was "at will." The Boss could hire and fire "at will."
But then an increasing number of laws emerged. Anti-discrimination laws concerning race, sex, ethnicity, age, sexual orientation, gender presentation, disability, veteran status, body size, hair style (e.g., the Crown Act), etc. And laws concerning family leave, grievance leave, pregnancy, emotional support animals, hostile work environments, etc.
Hiring, firing, promotions, office attire, work schedules, holiday parties, conversations among employees ... everything is a potential lawsuit.
HR is needed to navigate the minefield that employment law has created.
HR is full of politically-correct women who typically go home at the end of the day to several cats, but no partner....