Give access to a friend or family member when you're out of town.

Allow package deliverers to put a package in your garage instead of on your step.

When I had MyQ, I used it almost exclusively when I was on my motorcycle. I had it configured so that I could tap a button on my phone that tracked my location and enabled a geofence around my house so it would ping the MyQ to open when I got about a quarter mile from home. I called this my "riding home" mode. This saved me the trouble of having to get my gloves off and open the door through the app when I got to my driveway, and I didn't have to leave a garage door opener on/with my bike.

Putting aside the very legitimate use cases highlighted in other messages, a very simple one is: you're just arriving at home, but are still not (yet) connected to wifi.

These very practical daily occurrences can make devices incredibly annoying and frustrating for typical consumers who want it to just work.

That's why I have a radio remote in my car and in my living room and never bothered automating the garage door any further.

I find it handy for when I'm outside but not in my car—on my bike, working around the yard, etc.

For the "working around the yard" idea, I just got a keypad mounted near the garage door. It is wireless, it just acts like a remote which requires a pin before it sends the toggle command.

Check if you left it open? Let someone in remotely?

To let in your cat sitter.

I forgot it open.

the real solution here is to make it auto close locally.

That's a nice to have feature. However there are cases when one wants to keep it open for hours or, as pointed by other replies, to open it to let somebody in. An edge case I just thought about: open it to let somebody delivery a package inside, possibly by looking at them with a camera, and then close it.