since when was passionate enthusiasm a liability?

<p><em>&quot;So tell me, are you doing this because you're really passionate about the topic and want to change things personally, or do you think there is a big business in here?&quot;</em></p> <p>I've gotten versions of this comment in a number of conversations with potential investors lately.  The first time I encountered it, I stared across … Continue reading since when was passionate enthusiasm a liability?