Of course the rapid fall has made me think about Bitcoin's chances. But without going into details, I don't think much anything has changed except the price.
Seems that there are enough people in the market now that think the complete opposite of what I do currently, concerning the relation of price and fundamentals

Not sure I understand what you mean here . . .
Are you saying that you don't believe bitcoin's fundamentals are strong and anyone buying has "the complete opposite" opinion of you?
Of course! As you can see by rpietila's older posts, he has always been uberbearish all of the time
P.S. Are smileys too cryptic for public?