Doorknobs provide a worse UX for bears, which can be a useful feature for humans who want to keep bears out.
...elderly and disabled people find it easier to operate doors with handles. But so do bears. In British Columbia, bears have been known to scavenge for food inside cars—whose doors have handles, knob advocates point out. Pitkin County, Colorado, in the United States, has banned door levers on buildings for this very reason. One newspaper columnist in the pro-knob camp has noted that the velociraptors in “Jurassic Park” were able to open doors by their handles.
