That captains are earning £100K+ absolutely blows my mind. Other than doctors and consultants, there can't be many who get to consistently earn those amounts as an employee.
And the three jobs you list have three things in common:
Responsibility, responsibility, responsibility.
Doctor or consultant (medical ) stuff up and people might well die - worth paying 100K+ to recruit and retain that sort of expertise? IMHO Yes.
Captain of an aircraft -
Responsible for perhaps hundreds of lives everytime he/she goes to work, also
responsible for perhaps 100 million dollars or more plus of the company's assets. .... are they "worth it"? You tell me.
Eh , Guys . I don't know why you are all talking about 45K , captains earn far in excess of that
...
Every captain in every airline?