I think my reasons for going private are similar to charades. The private room and good food are just added benefits, the medical care and experience are definitely very different.
1. Pain - I don't want to suffer unnecessarily if I don't have to. In the public there are constrained resources, so that an anaesthetist usually can not put in your epidural simply for mild-moderate pain. Of course if you are having a c-section you will get one. I've had at least one friend who went private the second time because she suffered so much the first time, despite pleading for an epidural but not going feral about it at the staff (another friend was much more vocal and got the epidural but for me - do I really want that stress there and then?)
2. Choosing my doctor. Very important to me. Someone who will have time and patience to answer my questions. One person I can call when something happens or I am worried.
Also I want the doctor who puts in my drips to get it the first time, rather than after a few times. My epidural, I want it to be correctly positioned by someone who has done this a zillion times, not a trainee, not someone who only has 20-30 under their belt.
3. Episiotomy wound. Important for sexual function and bowel function over the long term, particularly if it goes wrong. I want as small cut as possible and for it to be made by an experienced person, cutting at the right time. I don't want to be allowed to tear.
4. Hygiene. As charade has said, whilst the public hospitals are not exactly dirty, I want the surrounds to be really clean, the toilets, my bed (linen changed as soon as it is soiled), I don't want to have nagging doubts in my mind as to how clean the surrounds are for my baby. I know a little bit of dirt/bacteria is good for the baby's immune system development over the long term but not from day dot.
5. The way I am told information and what will be done with it. I was told by my paediatrician that my baby had a heart murmur, and time given to me to ask questions and the implications explained to me in depth including what steps would be taken next. I was very upset when I found out. Some extra tests were performed immediately, a specialist paediatric cardiologist was consulted over the phone, and I was reassured it was a flow murmur and it went away in a few days. Contrast this to my lawyer girlfriend who was told by an intern (because it is an intern at QMH that checks your baby out if you have a low risk pregnancy right after they are born) that her newborn had a heart murmur, but couldn't answer any of the questions she had for the doctor. My girlfriend burst into tears with her husband by her side. A few hours later a slightly more senior person came to tell her more and what the plan for further management would be. She called us during that time for support. Sure their DD is okay, but I would not want that stress.
Yes, the public hospital is adequate and definitely superior if you have a baby which requires NICU, but we all bring our own evaluations to the table when you make these sorts of decisions, some of which includes finances, some of it includes the environment you want to give birth in, some are related to the doctor you want, ect. That is the beauty of HK, the ability to choose what suits you and your family.