Every country has a pension/social welfare scheme, ours is the CPF. It's a necessary evil and the government has to balance taxing and providing pensions. In politics, it's generally something that candidates all over the world steer away from because it's damn near impossible to find a better solution that will satisfy the needs of the system without getting into long drawn debates that voters don't really understand anything about.
You missed the point totally. No one here is challenging the necessity of a pension/social welfare. What the forummers are saying is that in S'pore, the withdrawal age keeps getting deferred and the minimum sum keeps getting larger. Moreover, the PAP keeps coming out with various schemes to retain our CPF monies as long as possible. That's what the people are fed up about. They are arguing against the need for a CPF scheme per se.