The life extension bonus effect of personal genome services: +10 years?

After all, what customers can really expect of personal genome services that companies like 23andMe can offer beyond knowing whether they have a perfect pitch or not? If the service can really help in minimizing the risk of life threatening diseases, than the real expectation is to live longer by using those personalized/commercialized genome data. The future will answer this question, but it seems pretty sure that robust life extension (more than, say 100 extra productive and healthy years) is not within range just by knowing your predisposed genetic makeup in details. At the present moment the life extension bonus effect for using those services cold be around a decade and this guess is coming from Thomas Goetz’s article in Wired on 23AndMe Will Decode Your DNA for $1,000. Welcome to the Age of Genomics:

And, yes, we will know whether our children are predisposed to certain traits or talents — athletics or music or languages — and encourage them to pursue certain paths. In short, life will become a little more like a game of strategy, where we’re always playing the percentages, trying to optimize our outcomes. “These are enormously large calculations,” says Leroy Hood, a pioneer of genomic sequencing and cofounder of the Institute for Systems Biology in Seattle, who suggests that if we pay attention and get the math right, “it’s not a stretch to say that we could increase our productive lifespans by at least a decade.”