The comments at the bottom of this article are hilarious.
Many of them seem to echo this sentiment:
"Bitcoin started by an unknown in 2009 and people are buying into it. I think there is going to be a lot people either very broke or very disappointed in the end. Someone is making money here and it probably isn't the average Joe."
Misinformed? Clearly.
Knee-jerk reaction? Definitely.
Should be dismissed? I'm not sure.
What they are saying is that they think bitcoin is either going to be very successful or a failure. When they say people are going to be broke they are saying it might be a failure, when they say people are going to be disappointed they are saying it is going to be very successful (people will be disappointed they did not buy into it earlier).
Satoshi even agrees with this idea. I believe he said something along the lines that in 30 years there will either be a huge number of bitcoin transactions or barely any at all.