I was fortunate to do jobs that didn't require a uniform - things like bookselling, journalism, admin, charity work. I've only owned one suit in my entire life, when I was a journalist, and I can't remember now if it was obligatory or I just wanted to be a snappy dresser.
Both my schools had uniforms, and I can't remember having any opinion of them one way or the other, apart from feeling smarter than the other kids in the street. I didn't yearn for something more fashionable, as I was never interested in fashion.
I suppose the advantage of uniforms is that they can give you an air of authority and expertise. And of course you don't have to agonise over what you're going to wear today. The decision has been made for you.
The disadvantage is that some people are hostile to anyone in a uniform, equating a uniform with officialdom, bossiness and condescension. They'll have a go at paramedics, nurses, police officers or even cabin crew.
I'm not keen on those workplace dress codes that are effectively uniforms - short skirts, high heels and make-up for women, or suits, plain shirts and ties for men. The idea is that they look more "professional" but personally I couldn't care less if a woman's skirt is long or short, I just want to know if they're good at the job.
Supposedly a lot of men go weak at the knees at the sight of a nurse's uniform. I can't say I've ever had that reaction. Dazzling intelligence is far more likely to put me in a spin. Or dazzling achievement. Or just a zest for life. With or without a uniform.