Leaving eugenics in the roadside ditch of this conversational journey, I think there are several important issues to consider:
1. Based on what we know now, the likelihood of the child of a PWC parent developing ME/CFS is far from 100%. Are you willing to give up parenthood entirely because there's a, for example, 1 in 4 chance that your child will develop ME/CFS some time in the future? Is a 3 in 4 chance too high for you? Even if the child did develop ME/CFS, what is the likelihood that s/he will be completely disabled as opposed to being functional? Where that line is drawn is a very individual thing, but
every parent faces the
possibility that their child will be disabled, so
you just have to decide how much risk you're willing to take.
2. We don't know what, if anything, is "inherited" in ME/CFS, so it's not clear whether "inheritance" can be minimized, or for that matter, even exists. If XMRV is the cause, then it may be possible to minimize the chance of transmission like they do with HIV.
An experienced retrovirologist (Dr Klimas comes to mind) might be able to provide some knowledge and wisdom on this question.
3. Antivirals stop replication of viruses. I think ARVs do the same.
It would be extremely dangerous to the baby to take AVs or ARVs when you are pregnant. Anything that messes with cell replication wouldn't be good. Again, a good retrovirologist could easily provide you with that info.
4. A potential parent needs to consider whether they can provide appropriate care for a child, whether that care comes from a mother, father, grandparent or paid caregiver.
If you cannot provide appropriate care one way or another, you should not have children, IMO. Fortunately, there are lots of options.
5.
Treatment of ME/CFS and associated infections (herpesviruses, enteroviruses, coxsacki, etc) will be very different in 10 or 20 years than it is now. We see significant changes already. Is ME/CFS likely to be a life-destroying illness in 10-20 years? A potential parent just has to make the best guess they can about what the future will hold for their children. This is true for ALL parents, not just PWCs.
6.
It is always wise for a woman to be as healthy as possible at the time she becomes pregnant. For a PWC, I suggest that means dealing with secondary infections before pregnancy, and making sure your nutritional status is excellent. A good ME/CFS physician will probably have more suggestions.
So, if it were my friend or family member who was a PWC considering having children, I would suggest that it's reasonable to consider having children, but
as in the case of all serious illnesses, they should have a detailed discussion with a knowledgeable doctor (I would recommend Dr Klimas) long before they become pregnant to make sure they are doing everything they can to give their baby the best chance of a happy, healthy life. That may include monitoring and early treatment of ME/CFS related infections.
FWIW~ some anecdotal data
I have a friend with 4 children; she chronic lyme. One child has chronic lyme also. That daughter has 3 children (so far) who are all healthy and happy. Both mothers are receiving treatment, mostly antibiotics. My friend is the most disabled and she is not even housebound.
In my family there are 3 people with ME/CFS -- only one in each generation, which is not bad odds. All 3 of us have chronic HHV6 and/or EBV and have received antiviral treatment. I am the most disabled and I am largely, but not entirely, housebound and am still improving. The others are functional at 90+% and 75%(still improving). I blame my poor condition on bad management in the early years of the illness -- something a parent can help their child avoid with monitoring and early intervention.