Longevity

Yes, I generally more agree with that. Of course, the transition will be somewhat messy and some errors will be made. But generally I consider that it will follow more or less the path as other phisiopathologies, like cancer. In many countries, when someone gets cancer, he / she just gets the treatment. Despite it being freakingly expensive.

First versions of comprehensive treatments will most probably really expensive. And, same as with mobile phones, microwave ovens etc, the economy of scale, experience curve, generally laid down infrastructure and competition will drive costs down and availability will skyrocket. Also, I expect a bunch of those therapies to be eventually paid from public health care - prevention is better that a cure, and healthy people can more contribute to economy (and I hope that governments will value also other things about that, like life itself 🤗).