Every generation has believed that its problems and troubles were unique, and my own is no different.  This is not the first time that people have believed a collapse was coming, and it may not be the last.  However, just because it is a bit self-centered to believe that this age is unique or different from other ages does not make it wrong.  Collapses do happen, and I think there is quite a good chance that one will happen soon.  
if you mean collapses on the order of what we have seen, i have to agree they are possible.  of course.

but i think the "doomers" are thinking something worse ... again that amusing link:

http://entropyproduction.blogspot.com/2006/05/peak-oil-taxonomy-doombat.html