The mission of HDB is to build flats for all Singaporeans

Really? Ask the singles. Oh ask the young professionals who happen to be earning a bit more, exceeding the arbitrary ceiling of $8000/$10,000 pm income. Are they not Singaporeans? Are they less deserving than the new citizens? What is their crime?

The premises for creating such rules have changed. Solutions need to be found to look after all Singaporeans so that no one is left out for whatever