James T Kirk explained in 3 sentences, ladies and gentlemen.
Star trek tos: a summary
Star Fleet: Do not do the thing
Kirk: I’MMA DO THE THING
Starfleet: Why didn’t you stop him from doing the thing?
Spock: The thing was the logical thing to do.
Starfleet: And you, why didn’t you stop him?
McCoy: I’m a doctor, not a babysitter.
And that’s it that’s the whole show 😀