I drive in the city and I don't mind it. There is a button to disengage it in my vehicle if I dont want it. Also, do you honestly think the engineers working for the auto manufacturers haven't thought this through and developed the technology so it doesn't destroy the engine? Its not new tech. Hybrids have been using it for a while now.
I work with mechanical engineers that do failure analysis on machinery, so I trust their assessment more than engineers who design and work for the people that sell the things.