Because these are good questions, I’ll answer some;

Physically weak

Humans are incredible long distance runners. We did a lot of hunting by “Chase it until it collapses”

9 months/15 years

Our brains take a loooooong time to mature, but it’s worth it. We can plan ahead without relying on survival instincts, and we keep making amazing discoveries like fire and clothes

Flexing on those other loser species with my opposable thumbs and ability throw stones