When fencing, left-handed people have the significant advantage of being able to dramatically switch their rapier from their right hand to their left hand, mid-combat, and announce that they are not really right-handed.
Due to it being a right handed world, most lefties are much better at using their non dominant hand for things. I can operate power tools, golf putt, easily drive a stick shift in any country, and do all sorts of things with my dominant or non dominant hand. Sometimes if I'm doing something that's making my hand or arm tired, I'll just do it with the other. Sure, it's not as good as using my left hand, but it still gets the job done.
Bonus points when playing pickleball or table tennis or tennis or whatever and I switch hands to reach and hit an otherwise out of reach ball in just the nick of time.
Notable advantage in a lot of beginner and intermediate level sports. By the time you get beyond that everyone knows how to compensate for left handedness.
Easier for you to assault a castle with spiral staircases while using a sword.
I'm told that Ferniehurst Castle on the border between Scotland and England was built with the stairs spiralling in the opposite direction because so many of the clan that built it were left-handed.
May also have been a subtle way to help protect in case the castle was stormed. I've certainly heard of castles where the steps were sometimes irregular heights - those who lived there would be used to it, but invaders would not and would find it harder to move effectively. A differently spiralling stair might have the same effect.
It's true of all combat sports, and, to some degree, any other sport in which you go face to face with your opponent.
And although it might be true that at the very very top levels people both learn to be more ambidextrous (so that there's less of a mismatch between sides whether right or left handed) and are more experienced/skilled at dealing with left handed opponents, the early years of learning the sport will weed out fewer left handed people so that the top levels have more left handed people.
I once read that the more competitive a society is, the now left-handed people it will have. I never did more research to verify, but makes some kinda sense
it's actually a good idea.
I once saw a store with many "for left handed" products.
But most of them aren't really necessary because you just get used to the regular ones.
You are born an outsider. This allows you to understand the world more clearly at a younger age. Not sure what advantages this may give but it's reality.
Training people in surgical techniques is way easier in lefties because most have been imitating right handed people so have some degree of ambidexterity. When you tell a right handed person to do precision movements with their left hand it fucks them up for a while.
in fencing left handed people have a slight advantage, since left handed people are used to fighting right handed people but righties aren't used to fencing lefties. other than that it's probably worse since it looks like writing left handed is more annoying
When I play basketball, it gives a slight advantage in the beginning when opponents don’t know I’m a lefty because they automatically assume I shoot with my right.
Also, being able to naturally drive one handed in a left-hand drive car.
In English we write left to right and lefties smudge their writing (or adapt their grip I guess) so, for right to left languages it's a plus.
After typing there para above, I guess they could also be better drawers if they have done more practice or use a different grip or draw instead of write if they're part of a class doing pencil and paper time.
My boss is Persian and a lefty and I asked her if Farsi (a rtl language) is easier to write mechanically and she said its basically the same as English ltr as a lefty so I don't really buy this anymore.
I think that I'm one the the majority of left handed people who aren't totally left handed. I write and throw with my left hand. I use scissors and a computer mouse with my right. It helped with taking notes from a computer in college, I guess.
I shoot pool equally well with either hand but I think that's the case with most people.