The first hand experience of people having been a student once isn't enough information in which to judge a whole profession. If that were the case, we should be letting only users of software direct how software is made.

Also, experiences can be really variable for different people. Some students might have many great teachers and be in a position where school is very positive for them. Other students could be facing an entirely different picture about the kind of schools and teachers available to them, esp. given the variances in local and state politics, class levels, income, and attitudes towards teaching.