The main thing is to eliminate corruption or at least reduce that from our system. It is irrelevant to argue whether you should join politics or not. But from the past experience I personally realized that "WITH THE HELP OF OUR COMPLEX AND OUTDATED CONSTITUTIONAL LAWS" , govt. can easily fool the common people unless they are threatened. They don't respond to any plea or any suggestions of the common people.
Hence some people are saying that its better to get into politics, hold the power (may be little less at first), make it corruption free, and by the next time the whole middle and lower class will be by your side.