Ctrl+wheel changes the whole page's layout at each zoom level, so for a complicated website, ctrl+wheel is very choppy and slow. And in most cases, that isn't even necessary, because I just want to see a part of the page (such as a small image or letters like the Chinese letters) bigger, not the whole page. On Android, I could just pinch-to-zoom on that part, but I can't find a way to do that on Windows Chrome.
I mean, without a touchscreen or a touch pad. With a touch pad, Windows Chrome zooms in/out exactly like the Android Chrome, but my desktop does not have a touch pad.