I think most Singapore's parents agreed with this.
Early childhood generally encompasses the first eight years in the life of an individual. The education given during these years of a child's life plays a very important role and helps in proper development of children.
Early childhood education can be fundamentally termed as "Learning through play". Recent research have shown that early eight years in any children life are crucial time because during this phase their brain develops and much of its 'wiring' is laid down.
That's why at the age of 2, most parents will send their kids to play group. Will you, as a parent, skip the paly group but send your kids to nursery at the age of 3 instead?