Actually some parents can be real competitive and nuts even when the kid lacks all ability to compete.
I have a son graduating from college this year from William Woods university (NAIA). He's played 4 years of soccer for them (never as a starter) and paid for his education with a soccer scholarship (not a full ride, but also got an academic scholarship). He was never as good as his sister and we didn't push him as much and as a result, I think he had a more positive experience even though he never had the success of his older sister. So maybe we weren't that bad of parents after all.