In human dynamics, very little is based on “first principles”. Some words are considered vulgar and others are not. Why? Aren't they just a sequence of letters? They certainly are, but those sequences have been assigned a meaning that does not derive from any “first principle”.

In the Western world, for a long time, at least 100 years, a suit was considered the proper attire for men. Then expectations changed and now some, many even, consider jeans and a t-shirt as aesthetically pleasing as a suit. Maybe in a few years, you'll go and talk to your lawyer, who will turn up to an hour-long meeting that you'll pay 500 dollars for in a tracksuit and it'll be perfectly fine, you'll even find the attire aesthetically pleasing.