Abstracting (too much), it's violated expectations - like broken promises, people really don't like it.

Taking a tangential step, computer automation is similar when it purports to be able to help you, but doesn't understand you well enough to do so; like MS's "clippy".

In contrast, Google's "I'm feeling lucky" button is automation that fulfills its promise (though the name emphases that luck is involved). Google can predict so well what I want, that this button is (very often) right. An awesome achievement. I added a simple command-line google lookup, to go directly to the page, and it's freaking me out how well it works:

    > cat ~/bin/g
    firefox google.com/search?q="$*"\&btnI= &