As a lecturer I wonder if we are not guilty of some of the same things parents are accused of on this thread:
we write fool-proof handbooks for any minor aspect of the course
we explain the handbook in our lectures, just in case they haven't got round to reading it
then we explain it in seminars, just in case they weren't listening in the lecture
and then, when they email us in a 2 hours before the submission deadline we patiently answer their emails
(and yes, they will still write in the evaluation questionnaire that they would have liked more information about the course)
As far as I can see we do it for exactly the same reasons:
we are tired, overworked, pushed to do ever increasing hours and stepping in quickly is so much easier than guiding somebody through the lengthy process of doing it themselves
as above - and sorting out a short term problem seems so much easier than risking it developing into a long term problem which will take far more time that we haven't got
we live in a competitive unforgiving society where nobody is supposed to fail or even struggle, so we fear for our young people