There is no 'need' for us to eat meat dairy or eggs. Indeed these foods are increasingly linked to various human diseases and animal agriculture is an environmental disaster for the planet.
Just as we reject racism sexism ageism and heterosexism we reject...
Just as there's garbage that pollutes the Potomac river there is garbage...
I look at Jagger and the like and if I see a good attitude I'll admire it but I wouldn't copy their style.