My 2 cents.
2015 BRS is 80.5k, 2025 payout is 650-700,
2015 FRS is 161k, 2025 payout is1200-1300
Source.
If in 2025, u feel payout is not enough, someone said top-up. Assume growing at 4% (should be more), projected 2025 is 120k, 240k respectively. i.e. In 2025, if you realise BRS payout too little, want to get FRS payout, someone has to top up 120k in 2025 to get 1.2k, so its a 550 to 600 more. Setting aside family dynamics (most have kids 2-3 nia leow).
Would you do it? Assume live till 85, 20 years, you get 120k at age 65. Even it out, Its 6k per year, 500 / mth. While living expenses will go up, retirement expenses doesnt go up in a straight line. I will bet my 2 cents (I poor), most will cheong 65 - 70, maybe 75 (travel insurance and med evac > 70 is ex one).
Top up by all means, my view is same as airline, save urself first, then save others.
Then how? I mentioned in other threads, earn more, pay more tax is progressive, then CPF have more get more is also progressive? Why does the gov want to extend ERS? If > FRS to ERS, cap it to 2.5%, those high income earners, instead of telling the less successful folks to invest/study, they should take their monies out and do likewise. Or they can leave the monies in CPF, take a lower interest, distribute the interest to those who have less.