This is one of the pluses, not the minuses. There's nobody out there saying you can achieve the standards. But there are lots of people out there saying you should push yourself in the direction of the standards.
"Impossible standards," for some religions, include things like being happy and fulfilled in a mixed orientation marriage with a large number of children.
Not all directions are worth pushing in, and religion is actually really bad at identifying the good directions.
This is one of the pluses, not the minuses. There's nobody out there saying you can achieve the standards. But there are lots of people out there saying you should push yourself in the direction of the standards.