But first....why do men wear ties? Are they trying to hang themselves? What's the deal with wearing something around your neck that might strangle you?
there is in fact a legit and honest answer to this, and as with most things relating to humans it's unbelievably fucking stupid.
go back 300 years and 'fashion' was a thing for rich people - clothing was all custom made, from the materials themselves to the actual sewing, and it was all done by hand.
so rich people would get tailors and make increasingly bizarre clothing choices using flourishes and other random bullshit to show off their wealth, and everyone else just wore sack cloth.
this generally lead to a cultural attitude where certain clothing styles became associated with the rich, and in fact in many cases became used as barriers to certain social class: ie, if you weren't already rich you couldn't afford rich clothes, so trying to show up in upper class society without the requisite uniform made you stand out.
cut to post-industrial revolution and the advent of mass production and suddenly all types of clothing became available to all people.
so what happened is that whatever random bullshit fashion excess was popular at the time with the monied class became the thing that everyone imitated, and at the time the cravat was in fashion.
this eventually evolved into the modern day necktie, and its history of being associated with the upper class is why it's considered to be a symbol of professionalism and business.
basically, a bunch of rich asshole dandies were wrapping their necks in bullshit around the time that clothing became universally available, and everyone glommed onto the idea of it to try and be more like rich asshole dandies.
200 years later, men have to wear the fucking things because humans are unbelievably retarded.