If I need a lawyer, I'll hire one in a heartbeat.
That doesn't mean I would like my sister to marry one.
I feel the same way about mercenaries, cops, politicians, arms merchants, preachers, propagandists, bureaucrats...and businessmen.
Sometimes we need these people, but that doesn't mean we have an obligation to respect them.
OTOH, I generally admire journalists, college professors, intellectuals. union organizers and social critics, individuals that businessmen tend to despise--because they see them as threats to their legitimacy, position and prestige.