We naturally see the world from eye height. Of course, children do too, just not the same eye height. It is so easy and natural to take photographs from eye height that shooting from any other height takes some conscious effort. Even with a tripod, it seems natural to crank the legs to eye height and set up the camera.
Not that many years ago, people photographed with twin lens reflexes which naturally worked best at waist level and the viewpoints offered were often very effective.
The downside to photographing from really low is that you can't avoid capturing a lot of foreground which invariably is out of focus (unless you are using focus blending or a tilting lens). Perhaps more importantly things like grasses get in the way of seeing the subject.
However, there are lots of times that a blurred foreground isn't a problem, that a low position isn't comprommised by tall grasses and the view of the subject with a plain sky background can be very effective.
Bottom line is that we should ask ourselves with every shot - what is the most effective height?
Sometimes the best height is two feet above eye level - do you travel with a small stool to shoot from a high position - might be a good idea.