When things are going well, a certain "euphoric blindness" seems to set in, and people pile into promising projects like the good times will never end, as you suggest.
A lot of people "went stupid" on Steemit... after all, the token went from less that seven cents to over seven dollars in about six months. I think it's always wise to keep in mind what "fair value" looks like...
I'm just hoping Hive will find its way back to the $0.50-$0.75 range, which is perhaps a fairer valuation, given all the things that have actually been built here. I just wish people would grok that they need to promote those things outside Hive's borders...