system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: I'm shy around girls, which seems like a shitty trait to have for reproduction. Why aren't all shy people already gone and replaced for confident ones?

I'm not an expert on evolution but it seems to me that people who have more difficulty interacting with the opposite sex would reproduce less and slowly go 'extinct', leaving only the confident people on this planet.
gpt
Being shy isn't something you inherit genetically though. A shy parent can have an outgoing child. Life is more than just a series of genetic sequences. Your life experiences, the culture you were brought into, all of those influence your personality more than merely your genes.