The word left conjures up many interesting connotations such as:
Left at the altar, not a very nice occurrence but an oft-used scenario to fuel a Romcom
Should have turned left at Albuquerque, used by Bugs Bunny in a cartoon I saw once, and now basically is the go-to phrase when you get lost and have to tell someone
Lefties, not exactly the word but oft used to describe one side of politics usually leaning towards socialism or communism, or perhaps simply because they don’t agree with us
They’re coming at us left, right, and centre, meaning people, or some other object, are coming from everywhere, that is, from all directions
But one of some more simple explanations, I’m left-handed, which means I write with my left hand.
Only that doesn’t mean that I’m left-handed at everything because I’m right-handed using a bat and playing golf. How does that work?
Turn left which means you turn in a specific direction, directly opposite to another direction, right, but I defy you to describe exactly how to turn left!
Oh, and by the way, I often get left and right mixed up.
There was only one slice of cake left, which means someone else ate it all, or that there’s one slice remaining, and you’d better be quick getting it.
Or probably the saddest of the examples, I left London to go home, meaning that I had to depart a place I wanted to stay but circumstances dictated I had to leave. Usually, you have to go back to work where you came from, but more realistically you couldn’t afford to stay.
In politics, if you are a right-wing conservative, anyone from the other side is a left-wing lunatic. Politics can be very polarising and there is often an all-or-nothing approach to the opposition. Rarely is there a middle of the road.