I totally disagree that using genetic manipulation to ensure certain genes are guaranteed to go to your children or that certain genes are ensured not to go to them is a good thing. Even if it would reduce the incidence of genetic diseases.
I'm not going to go for the cheap shot and argue that you're opposed to protecting children from genetic diseases.
I will say that I cannot think of any possible reason that providing the best possible genetic material is wrong-- any more than providing the best nutrition or education for them is wrong. We already do this, when we try to select the best possible person to mate with; the use of selection and engineering techniques is merely pushing this issue just a little further.
Some things are not about reaching for perfection. Reproduction is one of them.
First, who says that reproduction isn't about reaching for perfection?
Second, I would argue that is the exact
purpose behind sexual reproduction-- to drive evolution by combining and recombining genetic material until better and more adaptable organisms are produced.
I would fight for laws against such genetic manipulation as hard as I could.
Just as you can be sure that I will be fighting against such laws-- fighting against their passage, and fighting for ways to circumvent them, for my childrens' sake.
There will be millions of others joining you. But as I've already laid out... time and demographics are on my side.
I even consider gender selection of a child to be wrong...
I consider it petty and superficial, but it's something I would tolerate for the sake of permitting as little government interference as possible in reproductive decisions.
I can see this same problem coming about if a parent went through genetic manipulation to ensure that there children did not receive certain "bad" genes from them, but still ended up with a child with some sort of disability due to a nutritional deficiency, genetic mutation, or accident during the pregnancy or birth. Could you imagine paying a lot of money to try to keep your child from getting some disease that they may inherit from you, and then they are born with something like cerebral palsy or spina bifida or Down's Syndrome? The disappointment for the parents could be very detrimental to the child's mental health.
I would imagine that the consequences of having been born with such profound disabilities would have far greater impact on the child than the disappointment of their parents. Not to mention, this is something that happens
now, when parents give birth to disabled children... and what I am proposing would make it occur less frequently.
Of course, you do realize who you're arguing with? While you are arguing that parents would raise these disabled children poorly because they were expecting more-- a problem which already occurs with disabled children-- I've been arguing for years that they should not be raising these children at all.
There are already plenty of people, including children, who believe themselves superior to others because of what they or their parents can afford or how good they are at something or how pretty they look. Can you imagine the amount of superiority complexes we would have running rampant if they believed that they were manipulated prior to conception to be genetically without flaws? It would be an invitation to separation of classes and for people with power to assume control over people that they believed to be genetically inferior to them.
This is an issue of upbringing-- there is a term for children who behave in the fashion you are describing. They're called "spoiled".
And rich parents, and the parents of smart children, the parents of athletic or good-looking children, have been dealing with this for millennia. Some parents have an understanding of how to raise naturally gifted children, and some do not. Having more gifted children, and more children blessed in multiple areas, will not change this.
As for separation of classes... that is all the more reason to get behind this technology as quickly as possible, so that it becomes as inexpensive and freely available as possible. This is best not only for the species, but for society.