True - and I'm not trying to draw any line. I just wanted to throw some questions out there that people don't seem to be thinking about.
I've thought about them and mostly dismissed them.

And sure, like cars and computers such things will start out being affordable by only the richest people. And as things do, once the tech becomes more and more pervasive, it'll become available to wider circles of people. Ten years ago a giant flatscreen TV cost more than some cars. Now, a good sized one is a significant purchase but one most people don't really balk at, achievable with minimal planning. something like a quarter of a month's paycheck. Another five years or so, and they'll be something you pick up on a whim.
I've always wanted to use the phrase 'There will be a brief period of adjustment' as the title for a novel. If we found a way tomorrow to give people a lifespan of 200 years, there would be a brief period of adjustment.
Right now, today, we can do somatic gene therapy and change an adult's genetic profile by using retroviruses and a couple other methods. We've been doing it on a limited basis for 20 years now, cases here and there. It's still a work in progress, but every year it gets better. The main problem is the damn immune response, and the fact that we cannot do good germ line gene manipulation yet - germ line would allow the treatment to be self-replicating, and to be passed on to your kids. For instance, even if we were able to successfully somatically treat a genetic-based mental retardation problem in a person, their kids would still likely have the same problem.
Unfortunately, it looks like good research on germ-line gene therapies has been slowed considerably because of whining about 'designer kids', as well as the facts that it's as expensive as hell and still in the testing stages. There's a lot of problems with successful targeting, as well. There's a huge amount we still need to discover but we will, eventually.