JULIAN Tsui Kwok-yin and Georgiana Lai Yuet-wah have been married for seven years. The couple have acquired 10 dogs in that time but neither husband nor wife has any intention of acquiring any children. The pair are one of Hong Kong's few ''Dink'' families - double income, no kids - a concept which goes against traditional Chinese family values that see the main purpose of marriage as reproduction and perpetuation of the family line. ''I like children,'' says Georgiana, a 32-year-old secretary who returned to Hong Kong after studying in Australia. ''I just don't think I need to be a mother.'' Julian, 34, a supervisor in a construction company agrees that children are not his priority. Using the extra energy usually diverted into child-rearing, the couple feel they can concentrate on developing their careers. They also say that they can spend more time with each other, talking about their own interests and problems instead of their children's. ''We feel that our marriage is already very fulfilling because we have each other. We do not see children as indispensable,'' Julian says. Much of the free time they have is spent taking care of their 10 dogs. ''Of course, it is easier to take care of dogs than kids,'' says Georgiana. ''You only need to feed animals, but bringing up a child involves caring, affection and education which is very time-consuming. ''I think the child needs a full-time mother not a maid or a mother-in-law. I'd have to quit my job if I had a baby,'' she says. The couple, however, do notice that their view on family life is peculiar among their peers: ''Almost all our friends have children. We stand out because we don't have any,'' Georgiana says. ''We don't have any time for kids because of our heavy workloads. Besides, it's already so crowded in Hong Kong. There's no point in increasing the population,'' she says. Julian is also concerned about 1997. ''Although my wife has an Australian passport, I still think that the future is worrying. I don't know what's going to happen in a couple of years' time. This is definitely one of my considerations.'' The couple do not think that they are avoiding their duty by not having children. ''We don't feel like we are missing anything or running away from social responsibility. It is a personal choice,'' Georgiana says. Josephine Wong Kit-ching and Alfred Fan Kwok-chung have also decided not to have children, just six months after getting married. Josephine, 25, is a property negotiator while her 26-year-old husband is a research assistant working at the Hong Kong Polytechnic. Well-educated and financially secure, the couple live by themselves in their own property. Josephine attributes her decision not to have children to her gloomy view of the world situation. ''I don't think our society is suitable for raising children,'' she says. ''The environment is polluted and people are alienated. We face heavy pressure all the time. I don't think children can be happy living under these conditions.'' Alfred stresses his decision is purely personal: ''I just don't have the impetus to create a new life. I don't think my life would be more complete if I become a father. Neither do I buy the traditional Chinese duty of perpetuating the family line. ''Besides, there are lots of things I want to do which are, in my opinion, more important than having a child,'' he says. ''For instance, I want to invest more time in my job which I find gives me great satisfaction.'' Director of the Hong Kong Family Welfare Society Thomas Mulvey says most couples still want to have children although family size is getting smaller. According to government statistics published last year, the average number of household members dropped between 1971 and 1991 from 4.5 to 3.4. Mr Mulvey says many factors play a part in a couple deciding not to have children. ''They may worry about their financial ability as it is hard to keep up with the cost of living in Hong Kong,'' he says. ''People are very practical and are concerned about having a decent life. If they find that it's going to drag them down to the poverty line, they'll be more reluctant to have children.'' Mr Mulvey pointed out that if couples feel forced to have children by social pressure, it could be damaging to the relationship between their offspring and themselves. ''There are certainly couples who, if they were honest with themselves, would say they could not stand another person in their relationship,'' he said. ''The husband may feel that he can't tolerate his wife giving all her time to the child and maybe the wife can't stand the child taking away her husband.'' Mr Mulvey believes attitudes have changed over the past two decades and couples deciding not to have children are now receiving more sympathy and understanding than before. ''Not having children is certainly a defiance of traditional Chinese culture but tradition is stuck in history and people should be allowed to change their way of thinking as society progresses,'' he says.