Would Lokpal change everything in your day-to-day life? Any rational thinking person would know the answer, still why there is the kind of BLIND support for the movement
I think the reason is that we want to minimize the cognitive dissonance.
We all have been guilty of promoting corruption in some form of other, but our ego defense mechanism says that no you were a victim, you have always wanted this corruption to end. By supporting Anna you are externalizing this problem of corruption, a malaise that is not being promoted by you but you are a victim.
Think again, how many times you had the choice and still chose to bribe to take a shortcut (remember the last time traffic police caught you when you were on phone; or the time when you had got on to the train on a RAC ticket ; or the time when you took your kid to for admission or ….) You never demanded bribe, but you yielded to take an easy route and promoted corruption. Now the moral values book that you teach your kids, the stand in debates that you take, does not go well with what your actions. This has been troubling you at the back of your mind, and the moment someone (Anna) brings up the issue, you feel caught red handed. Ego self defense mechanism kicks in and says, you are with Anna, you have been a victim who has yielded to corruption because of the corrupt system, now with Lokpal it will all end, afterall it’s the panacea to all kind of corruption.
Gandhi said, Be the change you want to see in the world.
Make a choice not to support/promote corruption in day to day life.
I think once you get rid of your guilty conscience (by self awareness) , you will not be blindly supporting the Lokpal, you will try and analyze have realistic fact based discussion on pros and cons of Lokpal, how to increase its efficacy, rather than blindly support it. You will also be able to make your ego collect the courage to exercise the choice of not promoting corruption.