Why is it considered important to have life together when you live in a society?

People judge so much just by your character even lifestyle like what kind of car you drive or what type of job you do or even income you make. Lot of people I've met keep saying it's very important to work on yourself otherwise society will judge you. I guess we all do in a way like if someone approaches us within few seconds of interaction our brain just senses if this person is good or not. Maybe is just self awareness I guess. But like people say if you're men and drive a beatup car and make less money then no women will find you attractive then other half say just be yourself and authentic version and naturally you will attract the right people and energy. But I guess real world doesn't always work that way. Like so many people would lie, cheat and betray to get somewhere in life. Even like trying to find a job as an example..