The reason we keep body-tackling people with different fanboy tags is a brain fart known as choice-supportive bias, and it tricks us into thinking that the products we have chosen are the best ones out there. No matter what phone you choose to purchase, or which Dracula-shaped dildo you invest in, your brain may arbitrarily convince you it's the absolute pinnacle of technology, because obviously you wouldn't have bought it otherwise. Choice-supportive bias makes the good things about your gadget multiply in your head, while you happily ignore all of its negative traits. Even that block of wood with "I am a ApL iMacBook" carved on it that you bought from the tattooed Lithuanian gentleman in the "Cumputar Stoar" van is not a problem: Choice-supportive bias can also attribute negative features to the products you didn't choose, thus enabling you to think that everyone else's gear is somehow even worse.
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Just look at this pathetic time machine. At least yours is Styrofoam.
Because your brain wouldn't be your brain if it wasn't constantly looking for fresh ways to mess with you, this line of thinking also extends beyond material products. In this video, Internet deity and occasional actor Tom Hiddleston nicely illustrates choice-supportive bias in popular culture by explaining why he counterintuitively prefers Superman to Batman: He just happened to see the Richard Donner movie when he was 7, and boom! Superman bandwagon. Christopher Reeve got to him first. Oh, irony, you cruel bitch.