Your washing machine can only deal with certain classes of clothing. It will completely destroy others, and has no way to determine what clothing has been put into it. Meanwhile, the average untrained-but-conscientious human will, at worst, damage a small portion of an item of clothing before spotting the problem and acting to mitigate it. (If the clothing is "absolutely must never come into contact with water" levels of dry-clean only, they might still trash the whole item, but they aren't likely to make the same mistake twice.)

Programming is far more the latter kind of task than the former. Data-processing or system control tasks in the "solve ordinary, well-specified problem" category are solved by executing software, not programming.