I hypothesize that playing games which let you reload cancel mainly reinforces this bad habit. Even with unlimited ammo/mags, getting caught reloading doesn’t matter if you can stop and shoot right away. For me, it was when I played Insurgency: Sandstorm a handful of years ago that I unlearned this habit. Also Battlebit, MW22 and Helldivers II all punish reloading too frequently, through either staged reloads, limited mags/ammo, or both.