Because soaring with the eagles requires so much more effort.
There are people out there who do their best, work hard, and push their boundaries, not for praise or recognition, but for pride. We call those people “chumps.”
If a pretty poster and a cute saying are all it takes to motivate you, you probably have a very easy job. The kind robots will be doing soon.
When you wish upon a falling star, your dreams can come true. Unless it's really a meteorite hurtling to the Earth which will destroy all life. Then you're pretty much hosed no matter what you wish for. Unless it's death by meteor.