How many of the people pursuing any career would do it if it weren't for the salary?

(If it bothers you that salaries play a role in how people choose their majors, advocate for an economic system that allows people to pursue their ideal passions without financial worry, whether those passions are in computer science or poetry or "underwater basket weaving" or what have you. Until such a system is in place, though, it's only reasonable that people, in deciding how they'd like the rest of their life to play out, go where the opportunities are...)