Dive bars are only cool because there aren't that many of them
Thanks to capitalism, once proudly gritty cities like New York and San Francisco now only have storefronts affordable for banks, big-box retailers, or sports bars that sell expensive hot wings (and also happen to be billion-dollar enterprises). Where there used to be a dive in basically every neighborhood, there is now an ATM kiosk. And unfortunately ATM does not stand for Alcohol Teller Machine.
Sure, dive bars still exist, but they're not as common as they used to be, and that makes them even more worthy of your attention and affection. That Econ 101 class in college I actually stayed awake in taught me that scarcity can be very good for business. If there were a dive on every corner, would we even care? Would we fetishize its aesthetic, and the old guys still hanging out at the bar? Probably not.