Bitcoin is not going anywhere, atleast not in the near future... We may see some other coins with bigger growth during the next years but probably not enough to overtake BTC as the 'main' coin in the crypto market.
No mate, bitcoin is going into the top list of crypto currencies and it's not about to die soon. There are a lot of people that are sticking and saying that they will put their faith in bitcoin. And I won't say that there are just some other coins that will "take over" bitcoin, it has a big support from the community, companies, establishments and citizens.