I suffered with this myth for decades. Now, it didn't affect me too much because the narrower tires that I got, also took a lot higher pressure, and I usually i

I suffered with this myth for decades. Now, it didn't affect me too much because the narrower tires that I got, also took a lot higher pressure, and I usually inflated them to the max. And as a result of only caring about skinny tires, I neglected tire clearance on my frames. Then a few years ago I got a bike that could take wider tires, and was good enough quality to really try out for real. Today I'm one more anecdotal data point in support of wider tires. Now, I don't necessarily opt for the lowest possible rolling resistance. Instead, lowering the pressure allows me to ride in greater comfort but without the tires feeling slow. And of course other things affect rolling resistance too, such as (from what I've read) the suppleness of the sidewalls and other aspects of tire construction. And I'm not prepared to spend $$$$ to find the holy grail of tires.