Yes, Chennai is a dungheap (actually it is much worse from certain perspectives).
But so are Bangalore, Mumbai, Delhi and any city whose population has burgeoned.
Metros are not meant for us. Neither are five star hotels or any of the mascots of 'new age development' that are sought to be copied from the west. Such things in our hands would be treated just as a monkey would treat a flower garland - slowly tear into bits !!