it kinda might be true though.. what i've seen from some of the "to the moon," and "bitcoin will be 100,000 by 2015" people. they can be so involved in their passion that they can only see everything in BTC
except ... so far they have been right, for 3 years we have had exponential growth in both network adoption and correlated pricing. So at this point it is not so much mad, irrational 'passion' but purely past performance and expected growth rates ... although such radical mathematical realities can be otherwise sane people sound crazy and 'passionate' I accept.