Bitcoin appeared in 2009, eight years, the total value of the circulation of bitcoins up and down 200 billion US dollars. Bitcoin was declared "dead" by the media countless times. However, it is undeniable that the media has a huge influence. Therefore, with each media claim that "bitcoin is dead", the price of bitcoin will drop sharply. The magic is that every time Bitcoin is alive, its price has hit a new high all the way. In other words, in the face of so-called drug poisoning amateur media reports, bitcoin gradually developed "resistance", negative media coverage for the impact of bitcoin prices getting smaller and smaller. What will eventually destroy bitcoin? If there is a force that can destroy bitcoin, it must be human greed.
If there is a new coin that is more advanced and has many benifit to people I think it might become bitcoin's rival from people. As you can see there are still flaws of bitcoin and it is not widely accepted in most of the countries in the world. So if bitcoin will develop I think many countries will now accept bitcoins.