The left and right do exist, like say Christians, Buddhists and Muslims exist.
They are people who believe certain things, got educated at certain schools, get their news and analysis from certain sources and support certain causes and political parties.
Some are activists, organizers and influencers.
That being said, just as there’s many denominations within say Christianity, there’s many factions within the left and right, as well as some overlap between left and right, nonetheless commonalities between these factions are real.
The various factions within what we tend to think of as the left arguably tend to have more in common with each other than they do with the various factions within the right, tho I don’t think this’s always the case.
So whether they should exist or not, the fact is they do, and if you want to understand politics and the way the world works, you have to understand them.
I agree it would probably be better if there was less groupthink and polarization in the world, like I said I don’t identify as left or right, altho I tend to listen to more rightwingers, some of them very critical of the left, as well as very critical of the neocons on the right, I also listen to some leftwingers like Jimmy Dore, Glenn Greenwald, Kim Iversen, Aaron Mate, Max Blumenthal and Tulsi Gabbard, and I agree with a ton of what they have to say.
I’ve voted for the Green Party, the NDP as well as Max Bernier’s People’s Party, a Canadian nationalist and classical liberal party.
So I’m not left or right but independent, nonetheless I find the dichotomy and the various factions within them a fascinating subject.
I’m also a labeler, it’s something I’ve always done, even tho I believe I can think well outside labels, I still like assigning labels to things and people, but always with the idea in mind that no thing and no person perfectly fits into one label, especially in politics.
People and organizations are always more complex than labels, nonetheless labels are useful and, for me, interesting, they give us a bird’s eye view, help connect dots and understand the overall picture.
I also agree that political parties, perhaps especially mainstream ones, are all very corrupt, more loyal to oligarchs than to the people or principles.
I’ve always encouraged people to support grass roots politics, 3rd parties and independents, whether they’re on the left, right, center or think of themselves as outside the left-right spectrum, rather than the duopoly which’s beholden to the bigs (big business, big pharma, big brother and the military).