Metroman E Sreedharan on Thursday announced his decision to quit active politics. Stating that he learnt a valuable lesson from the election debacle, the metro man admitted that he was initially unhappy over his loss in elections, but then realised that even if he had won, a single MLA cannot do much for the people. 'I was never a politician and do not wish to. I am 90 now and hence do not want to be in politics. I need not be a politician to serve people which I am doing through three trusts,'