First, Primecoin has enough brilliant features and has its credit in 2013 and 2014
Second, Primecoin daily volume is good, who want to control  or ...
Third, Recently more new coins flood in the market. and some fork coin based on primecoin will stand up. and Primecoin community will be active with passion again
Finally, Peercoin is an indicator, so It is Primecoin  time soon