Su also notes that while young people's salaries are likely to grow over time, childrearing expenses, including daycare and education, are very high. He recommends that homebuyers keep their mortgage payments (interest and principal) to less than 40 % of household income to avoid sacrificing too much of their standard of living.
他也認為雖然年輕人的薪水尚有成長空間，但養兒育女的保母費、教育費同樣驚人，因此每月仍應將連本帶利的房貸支出，嚴格限制在不超過家戶所得的 4 成，以免為了購屋，而使得原本應有的生活品質嚴重縮水。