Singaporeans today prefer to take reference from television shows and movies from USA and other big countries. In the American dream, there is only the mom and dad, no domestic helper like in Singapore. In Singapore the parents play very different role. In families with domestic helpers, the children spends more time with the helpers than their mothers. Their fathers? Even less time because Singapore is a workaholic country and the Asian tradition demands that the man of the house spends long hours outside to work (or act like he is doing so). The children has all the bonding time with their helpers that if the helper is able to teach Kung Fu, the kids will surely learn Kung Fu very well.
While the Kung Fu domestic helper might not be feasible for your family, you always have the option of learning Kung Fu with me yourself, to mentor your child while the sifu is not around. Age is not an excuse. Sylvester Stallone and Arnold Schwarzenegger can still get into good shape despite their age. Celebrities and athletes aside, there are so many muscle grandads around on social media from middle class salaryman backgrounds. I don't believe it is something the Chinese race or the Singaporean man cannot do.
Kung Fu is effort over time. If you apply logic, it's unfair to expect effort from your child if you don't give him enough time with a Kung Fu practitioner, if you are not one yourself. It just doesn't add up. That's why we always emphasize over and over that Kung Fu is a lifestyle. Be prepared to make drastic changes.
Yours Truly Leroy Kwok