Also agree. It seems many people are convinced that others will just keep holding forever. Eventually there's less money flowing in and people will realize they aren't getting rich. When people aren't making more money they will start selling.
Worse, the people buying in now aren't true believers. They are "investing" because they think it is easy money. These folks represent a larger percentage of the market cap and are also least likely to have confidence in bitcoin for it's utility. They also stand to lose the most because their buy in point was so much higher. (people who bought in at say $1000, are just losing profits)
A panic sell will happen at some point.