All work and no play made blazinfury a dull boy.
J/k. As far as I am concerned it is a mark of 'high society.' A well-rounded education may prove successful in expanding your reasoning abilities ie: philosophy, art... and expand your understanding of other cultures/ parts of society (ethnic/ women's rights issues). I highly doubt it would be a limiting factor in being a successful researcher, but it is a factor considered by most (all?) medical schools in the form of humanities and social science requirements.