I understand that modern outer layers are more functional. A leather jacket, for example, can be dressed up or down so as to be worn in a variety of situations. It is also better at keeping you warm.
However, I think capes/cloaks are more aesthetically pleasing garments. It also feels good to have the fabric flowing around you as you walk. But what do you think?
The actual reason that we don’t is pretty much because of the invention of sewing machines. Once sewing machines were widespread, making coats became sooo much cheaper than they had been. Coats need a lot of tightly made seams which took time and so made coats very expensive. With sewing machines, making these seams was vastly quicker and more reliable.
Coats win over cloaks in so many ways because you can do things with your arms without exposing them or your torso to the rain and cold: impossible with a cloak.
Capes were the short versions - and intended to cover the shoulder and back without seams that might let the rain in, but with the new machine made seams, they were not needed either.
The really big change was when it became affordable to outfit armies with coats instead of cloaks or capes. At that point all the caché and prestige that was associated with military rank disappeared from cloaks and capes and they were suddenly neither useful not fashionable.
Nowadays, of course, they are no longer what your unfashionable dad would have worn: they are quite old enough to have regained a certain style.
I know someone who wears a cloak cape. They explained this to me how practical it was back 300 years ago that you could wear your nightly blanket.
I asked them if that was a situation they ran into often while living in Brooklyn. Having to bed down for the night with your cloak.
The other big reason is that the world is cleaner. Capes and cloaks also protect the whole body from mud/dust and can be easily removed. Riding a horse or walking on dirt roads is a lot dirtier than riding in cars or walking on a sidewalk
The original type of coat that would have been worn when riding was the Great Coat - which did cover the whole body, down to the ankles (and included the front of the body much better than a cloak). Those would have been worn by military officers, particularly.
Those were fine for riding, but then if you were off your horse and end up in the newly developed trench warfare - starting from around the US civil war onwards - you ended up wading through mud which got caked to the coat. So then they started cutting the coats shorter and they became Trench Coats.
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