<p>First of all, it was a light comment that made me laugh.
Second of all, pure science is probably not the best field for you if you are primarily interested in money.
Third, the scientists who made the breakthroughs in the early 20th century probably heard those comments too, discouraging them from entering a mired field. Thank god they stuck with it. Hopefully those who truly love physics will stick with it and solve the present problems.</p>