I dont think bitcoin will really cease. A lot of country are starting accepting and legalize bitcoin and i believe that bitcoin are just in early phase it just starting to become adapt to our society and not even a lot of people know bitcoin thats why i think bitcoin have a lot more potential.and like you said other coins are base on bitcoin so it will really not cease and it will become more popular.and thats the problems of newbies by just decreasing the value of bitcoin they panic and starting to sell their coins.