I have been telling you for years how much everything you think is your great parenting, or your parents' great parenting, or your hard work, or good character, or gumption, or good old days educational system is more likely genetics. The last twenty years of hard science invading the social sciences has been pretty convincing along those lines.
However, there is a dirty little secret I haven't told you about. A lot of the great evidence is not replicating as cleanly as predicted, and some claims turn out to be shockingly unsupported. There are reported alleles that cause one thing or another that disappear upon replication. Critics say "See, we told you so. There are hidden similarities in environment just from growing up somewhere in America that makes the separated twins' genetics look like more of a driver than they are." Or "Yeah, you sneered at epigenetics, but that's what you're seeing now, turkey." Measurement errors, cross-cultural definitions, yes, yes, these could be problems.
Everything I have been telling you could just blow up, true. I think this is the decade we find out. We might get our answer because of clever theorists plus new information that has greater explanatory power. But even if that doesn't happen, the brute force of computational power is going to reveal a lot. More full genomes (mine was worth $10K when I got it, sometimes you can get them as part of a bulk package for under $100 now), looked at with more granularity, poured into bigger studies, is going to bull its way through walls. The appearance of heritability is so overwhelming in what we are seeing in behavior and traits that I believe that is what will emerge on the other side. I don't think I will have to come to you hat in hand asking for your forgiveness. Not about this one, anyway.