So an interesting question on the forum about whether social anxiety and I suppose other mental issues are caused entirely by our life experiences and upbringing, our genetics or both. People hate talking about genetics, they think about the Nazis. However there is lots of evidence in the animal kingdom that mental characteristics are passed on. Scientists managed to breed a vicious breed of fox and turn it into a cute cuddly pet simply by selective breeding over a few generations. Almost all pets and livestock have been selectively bred to suit human needs. For instance the modern dairy cow is nothing like the wild cattle which it descended from and most dogs have the minds of puppies and never grow up.
We think we are different. We’re not. Tall parents are more likely to have tall children. if you selectively bred such people you could have a race of giants within a few generations. Because of isolation and inbreeding some races of people are in fact taller or smaller than others. Some are more muscular while others are thinner or better runners over long distance. We are not all the same at all. Given enough time and enough isolation different races of humans would have developed , or evolved into totally separate species of animal. There is absolutely no doubt about this. Its normal evolution at work and humans are not exempt. Of course it makes people feel uncomfortable but evolution does not give a toss about people’s feelings. Evolution is ruthless and cruel and selfish.
Its certainly true that we pass on some characteristics from our ancestors so is it possible that we get our faults like anxiety and shyness from them as well. Of course the positive people will say this is just an excuse to use for failure as if everything is predetermined and there are already some such replies on the forum like this. It makes them feel more comfortable, in control and also superior as they can ridicule others for not doing enough. However when evolution comes up people always ridicule it on forums. Most of them dont believe in God these days and yet they still have not gotten used to evolution either. No wonder they’re confused. In reality I think its both. we certainly get some of our personality from our genes but most of our character comes from our life experiences, probably.